Reaction: Cambridge hold Man Utd

1. Cambridge earn replay against Man Utd
2. Cambridge 76 places below Man Utd
3. Watch best moments via highlights tab

Thanks once again for your company this evening. We shall see you in the morning for more of the same. Adios!

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Paul in Portugal/Newmarket: I was born in Cambridge 55 years ago and I have never been so proud as I am at this moment of my home team. Dear old Cam Utd - Well done!

Cambridge boss Richard Money won the European Cup as a player with Liverpool and won the League Two title with Walsall. He also took Cambridge up at Wembley last May.

But this must be right up there with the best nights of his career. All credit to him.

Player reaction

More from Cambridge United goalkeeper Chris Dunn: "It's something you dream of. To take them back to Old Trafford is a dream come true, all the lads have dug in and done really well. I can't put it into words.

"The manager just told us after the game that it is deserved. Where the club has been over the last 10 years to now, everybody behind the scenes has been working so hard to get us back in the Football League, and now to get this is a massive reward. They have got the advantage being at home, we are just going to enjoy it and see what happens. Now we have to get ready for Dagenham on Tuesday, so I think tonight will be a quiet one to be honest."

EPA

Former Cambridge United striker Steve Claridge

BBC Sport

"Cambridge's replay at Old Trafford is a no-lose situation for the club. They have done the hard work and now they will have a wonderful time and will enjoy it. It will be difficult to see them getting a result because it is a totally different scenario to tonight's game, but anybody who has been here tonight will tell you how brilliant they have been, and would wish them good luck."

Saturday's FA Cup action

Plenty more FA Cup magic for you tomorrow - and this is the only place to catch it all. A quick reminder of the fixtures:

Blackburn v Swansea

Birmingham v West Brom

Cardiff v Reading

Chelsea v Bradford

Derby v Chesterfield

Man City v Middlesbrough

Preston v Sheff Utd

Southampton v Crystal Palace

Sunderland v Fulham

Tottenham v Leicester

Liverpool v Bolton

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Paul, Solihull: That was amazing, one of the gutsiest performances I've ever seen from a lower league club! Nobody should underestimate how brilliant Cambridge were there, what a club!!

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Oli Worth: No shirt swapping, no pitch invasion, no champagne in the dressing room - just a professional job from Cambridge United.

Rian Hoskins: Not an easy ground to play on and Cambridge were excellent but poor from Manchester United. An FA Cup replay they didn't need.

Lee Allen: Cambridge fully deserve that replay, played brilliant and I think with the FA rules all home fans should get ticket for Old Trafford.

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Manager reaction

Manchester United manager Louis van Gaal: "Yes of course it is frustrating. We make the same error as against Yeovil Town and against QPR, we did the same playing style more or less in the first half.

"Then I have to be angry again. In the second half we did much better but OK we are not out of the Cup. That is the most important thing. But the atmosphere here, the crowd, was fantastic. You know always in advance that all aspects in a game like this is against you.

"I was angry again but it is part of my job. I want to be very happy at half-time. But OK it was not always the same.

"I can only give the credit to the coach, to the staff they did marvellous, but what I already said every aspect of the match is against us - the pitch, the referee, everything that you can think about this is against you. Also the fans of course, but that is nice I think.

"The FA Cup is very important - it is the most important title for us. To win the Premier League is much more difficult now, so the FA Cup is our objective also."

AP

Manchester United boss Louis van Gaal says he "had to be angry again" at half-time after his side's first-half showing. Full quotes coming up.

Player reaction

Michael Carrick speaking to Bein sports: "We came here hoping to win the game, we knew it wasn't going to be easy. You can take the difference between the two clubs in the league pyramid but that goes out the window. We've had the better chances, and credit to them for the way we defended.

"People will ask questions of us not scoring, but we'll accept the replay and move on. We are on a decent run but we want to be winning matches. We have the firepower, we're creating chances, but we just didn't take them."

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Former Cambridge United striker Steve Claridge

BBC Sport

"You can only reiterate how much Cambridge deserved that. It was a magnificent rearguard performance."

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"The club have organised a buffet."

Come on Cambridge. Come on now! Nobody wants a buffet at the best of times...

Manager reaction

BBC Radio 5 live

More from Cambridge United manager Richard Money: "That was hard work wasn't it? Obviously I am very proud. We will try to go to Old Trafford and soak it in, enjoy the night. Because the praise and credit people will get tonight, they deserve.

"Financially for the club it's an incredible achievement. I thought first half we carried a threat, we robbed them in dangerous areas, our two wide players looked threatening, our set-pieces were good - we nearly scored one. The second half is what it is. The cavalry come, whatever, and it really is about how good your defensive organisation is.

"The goalkeeper and back four were outstanding. You can see what it means to everybody. We are all going back to a hotel in the city, families as well. The club have organised a bit of a buffet, there'll one or two drinks I guess. Yes, it'll be nice."

Player reaction

Manchester United midfielder Michael Carrick:"The first half was scrappy. We weren't at out best. Second half we were better. But it was a frustrating result and we wanted to get through, but we have a replay now.

"It's the FA Cup isn't it? We've seen things happen and they defended the box well and made it difficult for us. We have to be better and take chances when they come but you have to give credit to Cambridge United."

Catch the highlights

BBC

Missed any of tonight's game? You can see the highlights, including this save from Chris Dunn to deny Radamel Falcao, by clicking on the highlights tab at the top of the screen.

BBC Radio 5 live

Cambridge United midfielder Ryan Donaldson: "I thought it was quite an even game in terms of chances. We will take this. It's incredible. We've played at Wembley before and the gaffer has been saying all season that this cup run can give us those moments again. How many people will we take to Old Trafford? 15,000? I don't know. How many tickets we get we will sell out I am sure."

Manager reaction

Cambridge manager Richard Money: "I am extremely proud of each and everyone of my players.

"In the first half we carried a threat. In the second half it becomes world class players keeping the ball and I thought our organisation was good and we defended really well. We needed the goalkeeper and centre-backs to be good and they were.

"We tried to make sure the game didn't faze them in the tunnel and to look at the badge and go out work hard and see what happens. We were confident we could compete. We'll take the replay of course."

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Alex Royal: Magic of the FA cup is still alive! Well done Cambridge!

Steve Huish - Surbiton: If David Moyes was still the manager of United everyone would be saying he has to go. 200M spent in 12 months LVG has got a lot to answer. Not good enough.

Elissa in Cambridge: 'Take it to the byline and smack it into the first defender like Valencia' as a sequel to 'Scuff it like Jones.'

"Now the club is back again"

BBC Radio 5 live

Cambridge United goalkeeper Chris Dunn, speaking to BBC Sport: On his double save at the end of the game: "To be honest you don't think, you just go and hope for the best. This is the sort of thing you dream of though - to take Manchester United back to Old Trafford is a dream come true, the lads are buzzing."

Cambridge United forward Tom Elliott: "It was brilliant. I am shattered because I was so excited. We knew we had a good first half and that we had to step it up in the second half. But we dug deep and are going to take them back to their place! When I cam here there were only 2,000 people, now the club is back again. When I ran out for the warm-up the atmosphere was incredible. I was buzzing."

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Man of the match result

What a night for Cambridge and, in particular, Ryan Donaldson, who you have voted as the FA man of the match. Donaldson took 61.7% of the vote.

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We await reaction from either camp. Cambridge are off celebrating while Louis van Gaal and co slope off to the tunnel. Van Gaal named such a strong side, he will not be happy.

Gary Lineker

BBC Sport at the Abbey Stadium

"If you're wondering why Cambridge United's players are not swapping shirts with Manchester United's players it's because they have to pay to replace them if they do swap!"

Dion Dublin said before the game that his dream result was for Cambridge to get a draw which took them back to Old Trafford. He's got his wish.

Alan Shearer

BBC Sport

"It's a dream come true for Cambridge. Yes Manchester United had chances but so they should do. Cambridge are 12th in League Two and there was nothing between them for large periods."

Former Cambridge United striker Steve Claridge

BBC Sport

"Absolutely deserved. There was nothing fluky about this. Cambridge stuck to their task incredibly. They didn't give Manchester United anything at all, and I have seen United play an awful lot worse than this. These sort of games give you the impetus to go on and have a real go in the league. The result here changes the whole season."

Cambridge winger Ryan Donaldson: "It was hard! really hard. We got penned in but they have world class players and a draw is a dream result for us.

"They had two great chances in the second half and we will take a draw any day. It's going to be surreal at Old Trafford but we have been to Wembley twice last year - not bad is it?"

AFP

Flares off in the stands, players on each other's shoulders - picture book stuff. The fans are loving this, and quite right too...

FULL-TIME

It's all over! Cambridge have held on to earn a replay at Old Trafford. The place erupts, you'd think they had won the FA Cup!

A fine scene. This is what the FA Cup can still do. A great achievement from these 18 men and the coaching staff.

AFP

What a save. Heroic stuff from Chris Dunn and that could be that...

Former Cambridge United striker Steve Claridge

BBC Sport

"Chris Dunn has absolutely clattered Robin van Persie, he smashes him and then makes a wonderful save from the resultant volley from Angel Di Maria. Great play from the goalkeeper."

Empics

GREAT SAVE!

Brilliant from Chris Dunn! He comes off his line to punch away from in front of Robin van Persie, Angel Di Maria hammers in the rebound on the volley and Dunn is down low to save! His back four then scramble it clear.

A £1m save?

INJURY TIME

THREE MINUTES added on...

He's been brilliant all night but just when it could really matter, Ryan Donaldson serves up a terrible free-kick, chipped down the middle and right at David De Gea. An easy hold.

Last 90 seconds of normal time...

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Kerry: Regardless of the score, Cambridge United have played a cracking game.

Peter Martin: Where is Mark Robins when you need him?

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Cambridge win a free-kick in midfield. In the mixer?

Former Cambridge United striker Steve Claridge

BBC Sport

"Cambridge United have come back into it a bit now, and maybe it's Manchester United who will have a nervy end of the game. You wouldn't begrudge them this, Cambridge. If any team has ever earned a replay in the FA Cup, they have tonight."

Reuters

At the hour mark or so a Manchester United winner looked a certainty. now, I'm not so sure. Cambridge have been excellent, they really have.

That is a chance for the visitors though, Radamel Falcao heading over under heavy pressure.

SUBSTITUTION

Abbey Stadium is bouncing. This is Cambridge's best spell in 40 or more minutes as another long ball into the box is dealt with well.

Luke Shaw comes on to replace Daley Blind at left-back.

Former Cambridge United striker Steve Claridge

BBC Sport

"Brilliant from Phil Jones. He has not had one of his better nights but that clearance, headed behind when facing his own goal, was absolutely magnificent."

What a ball in that is! Ryan Donaldson with a peach of a cross - corner. You know where this is going. Brace yourselves...

Well played David De Gea. League Two giants around his earlobes and he makes a fine punch, 30 yards.

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George Thorpe: This has got replay written all over it now.

NathB: I could swear the clock is frozen! Come on Cambridge!

DT: Who is this wonderkid Luke Chadwick? Getting a lot of airtime. Hope Manchester United won't rue letting him go!

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Adnan Januzaj puts over a teasing cross - but there's nobody there! A poacher would have had a tap-in. Where's Andy Cole when they need him?

Twitchy pass time

Manchester United passes attempted - 526, Cambridge passes attempted - 157.

Passes don't win you matches though...

Former Cambridge United striker Steve Claridge

BBC Sport

"Great defending from Cambridge (see 78 mins) - a fantastic example of why they are still in this game. We've seen some great attacking play from Manchester United but Cambridge have been defending brilliantly. The chairman will be having a heart attack with so many players going forward though."

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FA man of the match vote

You can have your say on who should win the FA man of the match award by voting at the top of the page now. BBC One co-commentator Martin Keown has given you three options to choose from and the vote closes on 90 minutes.

Terms and conditions can be found here.

The best spell from Cambridge since the half-hour mark as Harrison Dunk weaves his way down the left. They could be caught between holding out for a lucrative replay and trying to win it here...

Phil McNulty

BBC Sport chief football writer

"First real anxiety from the home fans here at Manchester United turn up the pressure. Cambridge United have given so much here - will those tired legs bee a factor in these closing stages?"

Steve Wilson

BBC Match of the Day commentator at the Abbey Stadium

"Luke Chadwick's wife was happy he joined the club he supports, because it meant for the time in his career she didn't have to buy him a Cambridge United shirt for his birthday."

Tremendous noise still inside the Abbey Stadium, but the intensity and bounce in the stands is not being echoed by the multi-millionaires in white. having said that, there is a chance as Angel Di Maria plays a neat one-two and cuts it back, but great defending again to clear it away!

Reuters

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A few of you on social media have drawn comparison between Phil Jones - taking the corners for Manchester United tonight - and former England captain David Beckham, who had rather more success as a set-piece taker.

Kane Tobias Wilson: 'Scuff It Like Jones' - the new movie celebrating the cultured right foot and legendary set-pieces of Phil Jones...

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SUBSTITUTION

Still not one slip or lapse in concentration from the Cambridge back four and you have to admire that. They have defended their penalty area brilliantly.

And what a story this would be. Ex-Manchester United man Luke Chadwick is on for the final 15 minutes. He gets a huge ovation as he replaces Liam Hughes.

Former Cambridge United striker Steve Claridge

BBC Sport

"Cambridge have offered very little in this second half. I think there has been about three long balls forward, that's about it. But let me tell you, if they get anything out of this game they will have earned it."

That's two good chances for Manchester United now. Cambridge may not get a third life.

They are 18 minutes away from a money-spinning replay but if they are to survive that long they need to push out and try and retain the ball a bit.

Easier said than done! Obviously. But seeing out another 20 minutes of this siege looks a long shot.

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Former Cambridge United striker Steve Claridge

BBC Sport

"Robin van Persie just didn't get his bearings right- he hit it with far too much pace when he only had to tickle it over the onrushing 'keeper. He's probably still cold- he's only been on five minutes. But what an opportunity that was."

Martin Keown

BBC Sport at the Abbey Stadium

"You expect more from Robin van Persie and a striker of his quality. He has to keep that down. Manchester United are starting to show those flashes, but they have to take those chances."

CLOSE!

Ah it's a great chance for Manchester United. Angel Di Maria with the moment of class, had the time and space to loft a through-ball over the top to free Robin van Persie. The ball takes an awkward bounce and he is wide on the left of the goal but he hurries his shot and fires well over the bar.

Had to hit the target really.

Corner taker, playmaker, now Phil Jones shoots on the run from 30 yards. It ends up in the stands and Robin van Persie gives him a filthy look.

Empics

We are approaching the time when those huddled in the Abbey Stadium press box will be filing their first takes for tomorrow's early editions. A brave man to write his intro yet.

Surely this level of Manchester United possession must yield another clear opening?

Martin Keown

BBC Sport at the Abbey Stadium

"Manchester United will miss Fellani from the set-pieces. It could come down to that."

SUBSTITUTION

Louis van Gaal has seen enough. Marouane Fellaini and James Wilson come off, Robin van Persie and Ander Herrera are on.

The wind and rain are really lashing down now. If it was 5-a-side and you'd just turned up you'd be thinking about staying in the car.

BBC Sport chief football writer Phil McNulty at Abbey Stadium

"Manchester United have clearly been told to up the tempo by Louis van Gaal here - but still no breakthrough and there is real expectancy from Cambridge's fans whenever they get the ball into that Manchester United penalty area. Head coach Richard Money will feel there is a real opportunity for joy going down that route.

"How United have missed the creation and endeavour of their captain Wayne Rooney."

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David Shepherd: That is the goalkeeping equivalent of a worldie from the Cambridge 'keeper there to stop Falcao.

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AP

The first half was ebb and flow but now it's a white tide breaking against the amber and black shore. Cambridge can't get out, and Manchester United finally look dangerous.

They scored at this point of the Yeovil game, but it took a screamer from Ander Herrera. Who can find one now?

James Wilson is booked for the visitors.

Former Cambridge United striker Steve Claridge

BBC Sport

"Best play of the night so far from Radamel Falcao. To take a touch like that and keep the ball away from the defender was excellent. A wonderful ball from Michael Carrick too - he played it hard and firm, but Falcao takes one touch, hits it hard but Chris Dunn just gets a touch on it and the ball goes over. Wonderful save."

Martin Keown

BBC Sport at the Abbey Stadium

"Finally a forward pass from Manchester United and Falcao was alive to it. That's much more positive from United, but it was a great save by Dunn in the Cambridge United goal. A moment of brilliance from the visitors and could it be all over for them though."

Louis van Gaal thought that was in. He was out of his seat. What a cracking stop.

GREAT SAVE!

Well there it is, the first real save Chris Dunn has had to make - and it is top class! One to remember as Radamel Falcao gets away from his marker, slides in to take a shot at goal from no more than 15 yards, and Dunn gets a big hand on it to turn over the top.

Brilliant save.

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Former Cambridge United striker Steve Claridge

BBC Sport

"Both teams are adjusting to the conditions. Manchester United were playing into the wind in the first half and now it's Cambridge. It is blowing a 'hoolie' so to speak. We aren't affected in the commentary box but it is really windy out there. The penalty claim was just six of one and half a dozen of the other."

PENALTY APPEAL

Cambridge whip a good ball into the box, Antonio Valencia is wrestling with Tom Elliott but there is nothing doing. They were both at it, it was even.

At the hour mark and Cambridge keeper Chris Dunn hasn't had to make one decent save.

Empics

Coming up: Man of the match vote

In the last 10 minutes of today's game we will be asking you to vote for the FA man of the match award. We will let you know which three nominees BBC One co-commentator Martin Keown has selected for the award shortly, so stay tuned.

Martin Keown

BBC Sport at the Abbey Stadium

"The emphasis should be on Manchester United here. They are the Premier League team and we're not seeing enough from them."

James Wilson just threatens to break through the lines but he is mowed down by an excellent piece of covering from Michael Nelson. Any changes from the visitors? Louis van Gaal would make 11 if he could.

Former Cambridge United striker Steve Claridge

BBC Sport

"We've seen from decent play from Manchester United since the restart - intricate passing and good movement. But Cambridge United have stuck to their task and are making life difficult for the visitors. Cambridge have got men around the ball fantastically well - whenever United have possession in the middle of the pitch there is pressure immediately."

Goal alerts (if there are any) to your phone

BBC

We might still be awaiting a goal in this one, but remember you can make sure you're first to hear about all the goals in the FA Cup this weekend with alerts sent to your phone via the BBC app.

The app is freely available from Google Play for Android devices, the App Store for iPhones, and the UK Amazon Kindle Fire Appstore.

Luke Chadwick is warming up. That's #657 in the book of FA Cup fairytales.

Manchester United completely dominating the ball but have offered nothing of note, apart from the Phil Jones taking a corner novelty act. Again his set-play is easily dealt with.

Join the debate at #bbcfootball

Martin Drake: I very much doubt Cambridge's income (see 20:52) is only £1.6m now they're back in the Football League. Presumably that is last year's figure.

Simon Vine: Manchester United's formation seems to be 3-4-1-1 at the moment. Cambridge handling the start of the second half very well. Could change by 80th minute though...

Innocent Adriko: Someone please tell Louis van Gaal the cure to his 'ass twitching' is to play faster. Slow passing build-up is so boring.

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Martin Keown

BBC Sport at the Abbey Stadium

"Manchester United are asking some questions by putting some balls in the box, but Cambridge United have answered them so far."

SUBSTITUTION

A change on the wing from Cambridge, the outstanding name of Sullay KaiKai is replaced by the equally brilliantly-monikered Harrison Dunk.

Dunk joined from Bromley in 2011.

Excellent targetman play from Tom Elliott, taking the ball on his chest and winning a foul from Marcos Rojo. A chance for the hosts to get out and push up. But they waste it, going offside from the set-piece.

As poor as Manchester United have been, you wouldn't want to be sitting deep for the whole remaining 40 minutes.

Former Cambridge United striker Steve Claridge

BBC Sport

"From Manchester United's perspective, they have shown that they understand what this game is all about. They are prepared to be patient. It is all about that first goal and how it changes the complexion of the game - we saw that in the previous round with United's game against Yeovil."

Empics

Ryan Giggs shivers on the bench, huddled up in his tracksuit.

"Get him on!" is the cry from my right. Not going to happen.

Martin Keown

BBC Sport at the Abbey Stadium

"It would have been interesting to be a fly on the wall in Manchester United's dressing room. I expect Louis van Gaal has told his players he wants more urgency and intensity from them. Maybe they need to be a bit more direct."

Cambridge are very deep, Marcos Rojo and Phil Jones both in their half as they start another attack. It's a corner which Jones will again take. This is bizarre. Cleared.

Antonio Valencia beats his man and the cross comes in, Adnan Januzaj has it on the left and he is positive, drilling a low shot which Chris Dunn fields well at his near post.

Former Manchester United defender Phil Neville

BBC Sport

"Manchester United have got go start playing the ball quicker. James Wilson is a player who likes to run in behind but he has had no service whatsoever. Every time Michael Carrick has got the ball he's taken the safe option by passing it to the side. He has to start looking forward."

KICK-OFF

Game on. It took Manchester United more than an hour to score at Yeovil in the last round.

Alan Shearer

BBC Sport at the Abbey Stadium

"I think Ryan Donaldson has been the best player on the park, which is something when you think of the amount of money spent on some of these players. If Cambridge United are going to get something out of the game they will be looking to him. It's a big 45 minutes for him now."

AFP

The players are back out. Have Cambridge switched off or are they still pumped?

BBC Sport chief football writer Phil McNulty at the Abbey

"Cambridge's fans gave their side a rousing reception at half-time - and no wonder after more than holding their own against a horribly laboured Manchester United. This is Yeovil revisited for them."

FA

Have you ever dreamed of playing in The FA Cup?

BBC Get Inspired have teamed up with the Football Association and the country's leading small-sided football providers to launch the FA People's Cup, a free knockout competition which will give up to 14,000 teams and more than 100,000 players the chance to play in their version of the FA Cup.

From Sunday League regulars to folk who have only kicked a ball in their back yard, the tournament offers everyone the opportunity to follow in the path of legends on the road to Cup glory.

Find out how you can get involved here.

Join the debate at #bbcfacup

Matthew Penistone: For Mesut Ozil last year read Angel Di Maria this. Big money from Real Madrid, good start, but then totally off the boil played out of position.

Ken Gorry: David de Gea is a great shot-stopper but he doesn't dominate his box in the same way as Peter Schmeichel and Edwin van der Sar.

Olly Clements: Someone's gonna be buying Ryan Donaldson after this performance, playing out of his skin.

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As Dan Walker is telling the watching millions, it is a very, very busy weekend of FA Cup football on the BBC. You won't miss anything with us.

Get on Phil Jones

BBC

So Cambridge could double their annual income in one game if there was a replay at Old Trafford! That is extraordinary. So if it's 0-0 with 10 to go do they go for the winner?

You'd hope so...

Alan Shearer

BBC Sport at the Abbey Stadium

"The difficulty for Richard Money is getting his players to reproduce that again in the second half now. They will get tired."

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Former Manchester United defender Phil Neville

BBC Sport

"Manchester United have been playing too slowly. They've given Cambridge far too much time to get behind the ball, and then they have had to pass the ball back. Adnan Januzaj will be a world beater - I am sure of that. He has just not played enough games to find his rhythm in matches like this."

Why Cambridge want the replay

Sportingintelligence on Twitter: "Why Cambridge want replay: Manchester United have an average match income of £3.86m. Cambridge would get 45% (£1.7m). From ONE game. Their annual income is £1.6m."

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Duncan, Kennington: Sheffield United restricted Tottenham to just two shots on target at White Hart Lane in Wednesday in a very narrow 1 0 defeat and so far Cambridge more than holding their own against Manchester United A great advertisement for lower league teams. Fans of Premier League teams who poo poo lower league fans should take note, the Premier League is not the be all and end all!

Alan Shearer

BBC Sport at the Abbey Stadium

"A first-half performance like that does just not happen, it's hard work on the training ground from Cambridge United's players. Manchester United's forwards are missing support. They have wasted opportunities to get the ball in the box, and Ramadel Falcao should be going berserk in the dressing room at half-time because of the poor service he's had. No wonder Manchester United's forwards are not in the game."

Manchester United have struggled to score in the first half, but Cambridge have scored more second-half goals than any other side in League Two this season (24).

Can they get one more to make life really interesting?

Former Manchester United defender Phil Neville

BBC Sport

"Cambridge had the best chance of the game with the set piece at the end. It was actually blocked by Josh Coulson on the line and then he missed from the rebound. They are causing Manchester United so many problems. Their organisation on set pieces has been fantastic. There are seven or eight players in the box every time, and they have been surrounding David de Gea."

Manchester United have mustered just one first half goal across their last six matches in all competitions.

Not good enough?

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Former Cambridge United striker Steve Claridge

BBC Sport

"People will say I can't believe it's still 0-0, but Manchester United have not played badly. It is a difficult night and Cambridge have made it really hard. It is a great game and there is still an awful lot to play for in this second half."

Alan Shearer

BBC Sport at the Abbey Stadium

"No-one would guess there is 76 places between these sides. Cambridge United's players can be very proud with their first 45 minutes and they have been a threat from set-pieces. Ryan Donaldson in particular down the right side has been superb and has caused Daley Blind a lot of problems."

HALF-TIME

A huge roar greets the half-time whistle. Cambridge had the best chance of the game, despite the Premier League side's possession. Can the League Two side keep that up after the break?

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ONE MINUTE added on. Manchester United have the ball, can they find a way through?

Martin Keown

BBC Sport at the Abbey Stadium

"You would expect a player of Angel Di Maria's quality to hit the target from a free-kick like that."

Radamel Falcao gets a cheap free-kick, this is dangerous. Can Manchester United pinch the lead just on half-time?

Angel Di Maria to take, that's dipping - but not enough. "What a waste of money" from the stand behind the goal...

Former Cambridge United striker Steve Claridge

BBC Sport

"I'm not surprised about how this game has panned out so far. I thought this would be a difficult game for Manchester United. But I was just about to go: 'Oh no! Because it looked like there was a massive deflection (see 40 mins) and the ball was going to drift into an empty net. Fortunately for Cambridge a huge amount of sting was taken out of the ball, and the goalkeeper could collect it."

Martin Keown

BBC Sport at the Abbey Stadium

"Manchester United are finally starting to pass the ball around with a bit more confidence now. They are bossing possession now."

Angel Di Maria hits a hopeful shot which is deflected and for a moment has Chris Dunn worried - but the ball spins into his path. Phil Jones then has another clumsy moment in midfield, giving away a free-kick.

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Tom, London: Manchester United are in amber and black, right?

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Worth remembering that Manchester United took 64 minutes to score at Yeovil last time out, before eventually winning 2-0. Cambridge are seven minutes away from the interval - not that they are hanging on to be honest.

Martin Keown

BBC Sport at the Abbey Stadium

"Angel Di Maria looks much more dangerous in wide positions than centrally."

Former Cambridge United striker Steve Claridge

BBC Sport

To co-commentator John Murray: "There may be only 10 minutes left of this half but I hope you're not thinking about a replay already. As soon as Cambridge start thinking about that £1.5 million coming their way from a tie at Old Trafford then Manchester United will score, I can guarantee it."

Oh dear. Lovely ball over the top looks to have split the Cambridge defence for once but Radamel Falcao and Daley Blind get in each other's way and the chance has gone.

An inter-continental Chuckle Brothers. "To me, to you! Oh dear. Oh dear, oh dear...."

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Jamie-Lea Fawcett: I'm sorry - is the Manchester United defence currently unavailable?!

Jarvis Whitely: The only difference between Cambridge United and Manchester United is wage packets! Cambridge playing nice football!

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BBC Sport chief football writer Phil McNulty at Abbey Stadium

"No secrets here from Cambridge and Head Coach Richard Money. Seven players in the six-yard box for corners and Manchester United - perhaps understandably - struggling to deal with the sheer strength in numbers. Interesting tactic."

Getty Images

Adnan Januzaj, in from the cold tonight, looks sharp and is involved in a neat passing move which ends with Angel Di Maria skimming in a strike from 20 yards which Chris Dunn can only gather at the second attempt. Bit of a juggle from the Cambridge keeper but nobody sniffing in on it.

Not for the first time, Manchester United could do with Nemanja Vidic. He would have cleared that one out.

The first rule for Manchester United's defenders for the rest of this game must be 'do not concede a corner.' They look ragged.

Martin Keown

BBC Sport at the Abbey Stadium

"It was a teasing ball in and a great chance for Cambridge United. Manchester United need someone who just goes to attack the ball to defend these corners better."

Former Cambridge United striker Steve Claridge

BBC Sport

"What a chance. Every time Cambridge get a set piece we know exactly what is going to happen, they just cluster upon David De Gea."

CLOSE!

Off the line! It does go in around the ears of David De Gea, a Cambridge head wins the corner and it's blocked by the shins of Cambridge defender Josh Coulson on the line. Unlucky, and Coulson then spins to head the loose ball onto the roof of the net.

Was that their chance?

Empics

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Dominic O'Caollai: Angel Di Maria will likely end up a great buy, but since a blistering start he has been terrible. Delivery from set pieces is awful.

James Lamming: Manchester United looking very sloppy at the moment. Hard to see which is the League Two club.

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If you could sign one Manchester United player for a League Two club, who would you go for?

I'd have said Radamel Falcao before kick-off but he's been anonymous. Cambridge win another corner. You know where this is going...

Former Cambridge United striker Steve Claridge

BBC Sport

"Marouane Fellaini looks completely lost. He just does not know how to play wide midfield in a diamond. He looks totally lost out there."

Empics

YELLOW CARD

As soft a booking as you will ever see. Marouane Fellaini lays a hand on a Cambridge player's shirt and gets a booking - 80 yards from goal. That is very harsh.

I appreciate those of you texting in asking me to change the ball to a different colour but you've really over-estimated my clout I'm afraid. We're stuck with the mango for the rest of the season.

Getty Images

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Joseph Holding: Angel Di Maria has looked like a pub team player so far. Some really awful touches on the ball.

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Former Cambridge United striker Steve Claridge

BBC Sport

"It is the sort of night when you have to make allowances - even the best players in the world can struggle in these conditions. You cannot have any complaints about the way Manchester United have applied themselves though. They have knocked the ball around nicely. If we were wondering whether they would come here with the right attitude, well they have been spot on so far."

Cambridge winger Ryan Donaldson is putting himself in the shop window at the right time. A great opening quarter from the former Newcastle man as he skins £14m Daley Blind again. Looks like he could do a job a lot higher than League Two.

(I'm not his agent.)

Steve Wilson

BBC Match of the Day commentator at the Abbey Stadium

"I wonder how long it's been since Angel Di Maria has played at a ground where he can kick the ball out of it?"

As Claridge says, this is opening up a treat now. First attack down Manchester United's right sees Antonio Valencia cross in, Radamel Falcao is beaten to the header but the ball falls for Adnan Januzaj in the D. He doesn't lash at it, it's a controlled volley, but it lacks pace and Chris Dunn pounces on it. Moments later Angel Di Maria clears the stand from 30 yards.

That's in the cow field!

BBC Sport chief football writer Phil McNulty at the Abbey Stadium

"Cambridge United's fans looking for every ounce of encouragement they can get here - and it is fair to say the performance of Manchester United defender Phil Jones is giving it to them."

Reuters

Former Cambridge United striker Steve Claridge

BBC Sport

"The game is just starting to open up now. Cambridge have been trying to isolate Marcos Rojo by switching the play quickly to Tom Elliott. We've seen his pace and strength already. You do get the feeling that running with the ball and playing neat incisive passes is going to be the better way for Manchester United to play, rather than playing long diagonal passes."

AP

Where's the defence?! Phil Jones plays a shocking pass square, Ryan Donaldson gambles and cuts it out, and a better touch and he's in on goal. Jones recovers to clear but that was a calamitous pass from the England man.

More good defending from Marcos Rojo as he disrupts Tom Elliott, the ball comes back in from the impressive Ryan Donaldson and Elliott skims a header away from goal. Bit of a 50p head there. A cracking tackle then involving Phil Jones - you could hear the thwack from Salford.

Phil Jones on corners one side, Angel Di Maria from the other. Neither can beat the first defender. If I'd spent £60m on a man who couldn't put a corner in I'd demand a partial refund.

That was a rubbish ball in from Di Maria.

Martin Keown

BBC Sport at the Abbey Stadium

"Marcos Rojo has certainly shown he's here for a battle tonight."

Three players on the deck after some 'proper' tackling. Ryan Donaldson nutmegs Daley Blind, lovely stuff, and Marcos Rojo comes over to lay down the law. It's a bit two-footed, but under control. Hard but fair, I would say. Manchester United somehow get the free-kick.

Rojo looks up for the fight, that's for sure.

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Danny Cheng: Went to school with Josh Coulson and now am watching him play against world class players. Coulson to head in the winner - called it.

Christophe Talbotski: Is it me, or does the grass look a little longer in the corners...

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CLOSE!

Cambridge corner. Not taken by a centre-half - and it's close! Ryan Donaldson's delivery is on the money again and Liam Hughes slams a volley wide on the stretch. Superb start again from Cambridge. Can they turn it into a superb middle and an end?

Former Cambridge United striker Steve Claridge

BBC Sport

"There is one of those horrible swirling winds tonight. Players don't mind the rain, but we've already seen the ball really pinging around and a couple of Manchester United players have been struggling to get it under control."

Getty Images

Martin Keown

BBC Sport at the Abbey Stadium

"Cambridge United will be very happy with this start. They've set their stall out with set-pieces and looked neat and tidy in possession. It'll be a big test for Phil Jones and Marcos Rojo at the back."

Best moment from Manchester United. Adnan Januzaj picks his head up and finds Daley Blind on the overlap, he could cross but cuts inside and his low shot is pushed behind by Chris Dunn.

Brace yourself Twitter - it's another corner taken by Phil Jones...

Richard Money could not have asked for more from his side. They have harried, looked dangerous and kept their shape when Manchester United do have the ball. They let Phil Jones have it and he puts it wastefully away.

"You're not famous anymore..." is the call.

CLOSE!

Cambridge win a free-kick, deep, and it causes trouble again! Ryan Donaldson clips it in, Tom Elliott with the proverbial salmon-style leap, he gets above Marouane Fellaini, but heads wide. There's a panic when the ball is in the Manchester United box for sure.

Getty Images

Martin Keown

BBC Sport at the Abbey Stadium

"David De Gea wasn't convincing coming for that corner. It should be very interesting from set-pieces."

Cambridge make their intentions clear from the corner, they have four or five men invading David De Gea's personal space and the Spaniard flaps at it alarmingly! He gets away with that one but that could be a route to goal form the U's.

It's a cracking start from the League Two side. They have pressed and harried their celebrity visitors and Tom Elliott roughs up Marcos Rojo to win a corner. Dion Dublin would be proud.

Angel Di Maria - the British game's most expensive player at £60m - has a horrible first touch and runs out of turf. The stands - so close to the pitch - are quick to tell him what they think. And they don't rate his value for money.

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Max Rex: Angel Di Maria, Ryan Donaldson, Radamel Falcao, Tom Champion. Four of the world's greatest players are at The Abbey tonight. Come on Cambridge!

Mat Smith: That is a ridiculous line-up for Manchester United against Cambridge. Louis Van Gaal has showed them massive respect by naming that team!

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Good positive intent from Cambridge winger Ryan Donaldson, running at left-back Daley Blind but running out of turf. Blind has played in about seven positions for Manchester United this season already. The new Phil Neville.

It is a back four for Manchester United, all in white tonight. One ball over the top from Cambridge toward Tom Elliott and the ground roars in approval! Great noise.

Martin Keown

BBC Sport at the Abbey Stadium

"It's a different experience for a lot of these new Manchester United players, especially the foreign players, but you would expect them to deal with it."

KICK-OFF

Radamel Falcao kicks us off at the Abbey Stadium. Game on!

Everybody set? I reckon it could be a tester for Manchester United...

Alan Shearer

BBC Sport at the Abbey Stadium

"Cambridge United have got a chance. It's probably a one in hundred chance, but what an opportunity for some of these players."

Former Manchester United defender Phil Neville

BBC Sport

"Cambridge United just have to enjoy the occasion. Their supporters have been here for an hour and a half already, the atmosphere is incredible. On paper Manchester United should stroll the game but you never know. The cameras are here for the upset. United's attitude has to right - because if it's not there will be an upset."

Getty Images

"Yellowwss! Yellowwss! Yellowwss! Yellowwss!"

The Abbey erupts as the players emerge into the frozen night. A neutral's dream. Can we kick-start the weekend with a Cup cracker?

Vote result

A foregone conclusion?

Apparently not, if you are to be believed. We've been asking whether Cambridge can cause an upset, and 37% of you said the League Two club can do exactly that. Louis van Gaal - you have been warned.

You'll be able to vote for your man of the match via this page later on - so don't go anywhere!

Alan Shearer

BBC Sport at the Abbey Stadium

"I've been amazed at the lack of expectation at Manchester United with the amount of money the manager has spent. It should be the minimum to get into the top four. I don't think any of his signings have been brilliant. When you look at the criticism other managers have got it's surprising that Louis van Gaal has got off so lightly."

I've been to Cambridge on a Friday night a few times to watch the mighty Cobblers - I've never heard it quite this loud before!

Almost time for kick-off. The Cambridge players emerge from the dressing room. Go well, be lucky - and as the sign above the door says 'Be honest.'

Cambridge midfielder and former Manchester United man Luke Chadwick: "It's going to be a great occasion for the team and it is great to see Manchester United grace the hallowed turf of Cambridge!

"I used to come and watch the club when it was on a high before and this is another big night. We are all buzzing and can't wait to pit our wits against such a great side.

"We are more than capable of coming out here and giving a good performance."

Former Manchester United defender Phil Neville

BBC Sport

"Luke Chadwick used to come in to training at Manchester United with a Cambridge shirt on - he is such a massive fan of the club. Hopefully he can do his bit for them tonight. The biggest strength Cambridge have is the height of their team.

"Every time they get a deep free-kick or a corner they get the ball in the box and flood it with players. Just the sheer height of their players allows them to dominate, and because they commit so many forward, they are also really good at maintaining the momentum of their attacks."

Empics

LINE-UPS

Cambridge Utd: Dunn, Tait, Nelson, Coulson, Greg Taylor, Hughes, Champion, Donaldson, McGeehan, KaiKai, Elliott. Subs: Ball, Miller, Dunk, Norris, Simpson, Chadwick, Bird.

Man Utd: De Gea, Valencia, Jones, Rojo, Blind, Carrick, Fellaini, Januzaj, Di Maria, Wilson, Falcao. Subs: Da Silva, Shaw, van Persie, Ander Herrera, Fletcher, Valdes, McNair.

Referee: Chris Foy (Merseyside)

Alan Shearer

BBC Sport at the Abbey Stadium

"They might have big players, but Cambridge United can play a bit as well. Cameron McGeehan, on loan from Norwich, has been really impressive since he's come in and he'll be a danger along with Ryan Donaldson. Manchester United must respect them."

Manchester United manager Louis van Gaal speaking to Match Of The Day before kick-off: "I am always preparing for my games very seriously. We have a structure so we know that always these types of matches there is a surprise. We have to be not be the club that is the surprise.

"Our formation? You have to look. I don't give any aspects away before the game. But I think everyone will look and quickly see if it is a four or five (at the back).

"We have prepared for their height, of course. We have to trained for that aspect. But we have to play our own game and that's important. Against Yeovil Town you saw that we play a little in their style, but that's not ours. We have to play our own game and then we shall survive."

Empics

Join the debate at #bbcfacup

@jamesrm1

Russel James: Chicken balti pie and Bovril. The perfect combo for FA Cup action on a Friday night!

Mark O'Meara: Cambridge is a classic tiny Football League ground. Went in November. Will be a great one tonight.

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Alan Shearer has picked out midfielders Cameron McGeehan and Ryan Donaldson as the ones to watch in the Cambridge team.

Cambridge have seven outfield players starting who are over six foot tall. Got to go big! No wonder that Marouane Fellaini starts...

Money talks

Cambridge United boss Richard Money: "We played at Wembley twice last season which has given us some insight into the media attention for this game.

"We are well prepared. We've enjoyed it, you have to. We've handled it pretty well. The romance of the Cup still exists.

"In the last 18 months this club has been rejuvenated and tonight's game is just reward for all of those people who have worked so hard behind the scenes."

Getty Images

Former Manchester United defender Phil Neville

BBC Sport

"Louis van Gaal has said the back four in the 4-4-2 gives him a 'squeaky bum', but I think the players prefer the back four, with Michael Carrick at the base of a diamond in midfield - that suits Manchester United better. Abroad, the cup competitions aren't that important, but the difference between the line-up tonight and the line-up van Gaal selected against Milton Keynes in the League Cup earlier this season, shows he recognises that it is important here."

Just 15 minutes to go until kick-off. What a night for players like the superbly named Tom Champion in the Cambridge midfield - this is his first season in the Football League after a career with Bishops Stortford and Dartford. What a leap...

Alan Shearer

BBC Sport at the Abbey Stadium

"I don't think either four or three at the back has worked for Manchester United. The players aren't good enough and Louis van Gaal knows more than anyone that it's area they must improve.

"Van Gaal showed a little bit of disrespect against MK Dons in the League Cup and they were knocked out. He's gone with a much stronger team tonight."

Louis van Gaal said yesterday that he gets a 'twitchy bum' every time his side play with a back four - but we think that he has lined up with one tonight. Can Cambridge get the Dutchman squirming tonight?

Alan Shearer

BBC Sport at the Abbey Stadium

"It was a dream draw when it was made, because it's an unbelievable opportunity for Richard Money and his players to make names for themselves. He will just tell them there's no pressure on them. Just go out and enjoy it and don't leave anything in the dressing room.

"I think it will be a very different experience for the United players with their direct style which they won't be used to and it's freezing cold out there as well."

Former Manchester United defender Phil Neville

BBC Sport

"The FA Cup is probably the only chance of silverware Manchester United have got this season and I think this will be tougher than the game against Yeovil. Cambridge play direct football, and a lot of the United players will not have played in grounds like this. The atmosphere here is great."

BBC Radio 5 live

Cambridge United chairman Dave Doggett: "Ten years ago we were in administration, and even two years ago we were losing £25,000 a month, but we kept the youth policy going and, as a group of directors who are all fans of the club from the 1940s, we just kept going, and kept the youth development going.

"When you drop out of the Football League you get no support for youth development whatsoever, but tonight there are four in the squad who came through that system. It just goes to show that you can do it with honesty, integrity and determination. Now the ground is full and there is an enthusiasm in the town. Everybody has heard of Cambridge University, but after tonight everyone will have heard of Cambridge United."

I should tell you that the stands at the Abbey have been chock full since 19:10 or so. You don't see that at many grounds any more...

LIVE NOW!

Match of the Day

Live now on BBC One and on this page, Gary Lineker presents the FA Cup fourth round from the Abbey Stadium.

FACT! Manchester United have lost just one of their last 13 matches in all competitions.

FACT! Their last four league games have produced just five goals in total.

One nil win?

Coming up on BBC TV & radio

Match of the Day

Gary Lineker will be joined by Alan Shearer and Phil Neville as BBC One brings you live coverage of tonight's FA Cup fourth round tie at the Abbey Stadium from 19:30 GMT. Steve Wilson and Martin Keown will be up in the commentary box.

Alternatively, you can listen to full match commentary on BBC Radio 5 live. Mark Chapman is presenting the build-up now before John Murray and Steve Claridge talk you through the action.

Join the debate at #bbcfacup

We've discussed the best FA Cup shocks a lot this season - but what is the most surprised you've ever been at another, non-football sporting moment?

Getty Images

Ikechukwu Nlemadim: How about Chioma Ajunwa winning gold in the 1996 Atlanta Olympic games? Does that deserve a mention as a shock in sport?

Ajunwa won gold in the long jump and is Nigeria's only individual Olympic gold medallist to date.

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BBC Sport chief football writer Phil McNulty at Abbey Stadium

"No Wayne Rooney tonight but a good chance for youngster Adnan Januzaj to remind Manchester United manager Louis van Gaal of his quality on his first start since the draw with Chelsea at Old Trafford in October.

"Cambridge's fans were gathering at the Abbey Stadium hours before kick-off. This is a wonderful night for chairman Dave Doggett as the club re-establish themselves in the Football League after a nine-year absence and now have the chance to slay the giants of Manchester United."

Catch up on the transfers

In just over a week or so we will all be settling down for the final few hours of the transfer window.

It may have been quiet so far, but it could go off at any time.

Getty Images

This FA Cup hero has been on the move today - check out all of the month's moves so far on our transfer page.

I cannot confirm or deny that the pitch has been mowed to a uniform length all over tonight...

It looks in fine fettle though as the players warm up. Phil Neville is complaining that it is freezing in the TV studio. so it must be cold out there.

Former Cambridge United and Manchester United striker Dion Dublin

"The people of Cambridge took to the way we played the game which was incredibly ugly! Our manager John Beck knew all the tricks. He actually decided to grow the grass long in the final third of the pitch. The thinking being when the ball was smashed up field from deep it would stop in the longer grass, our wingers would get there and cross it for me, Steve Claridge and John Taylor to nod it in. Simplicity!"

Former Cambridge United striker Steve Claridge

BBC Sport

"The Cambridge United team I was involved with in the early '90s, it was a team the likes of which this club will probably not see again. I think it was a failure we didn't get to the Premier League. Had we got there we would have been the first team to go right through the divisions in consecutive seasons. As a unit there were not many better than us. We took Arsenal close on a couple of occasions, we drew with Manchester United at home."

The People's Cup

FA

Have you ever dreamed of playing in The FA Cup?

BBC Get Inspired have teamed up with the Football Association and the country's leading small-sided football providers to launch the FA People's Cup, a free knockout competition which will give up to 14,000 teams and more than 100,000 players the chance to play in their version of the FA Cup.

From Sunday League regulars to folk who have only kicked a ball in their back yard, the tournament offers everyone the opportunity to follow in the path of legends on the road to Cup glory.

Find out how you can get involved here.

There was a lot of chat that former Barcelona keeper Victor Valdes would make his debut tonight but in hindsight, perhaps away at a League Two side isn't the best place to make your first appearance in English football...

Join the debate at #bbcfacup

Paul Bernal: Good luck Cambridge United - I played at the Abbey as a youth in a local cup final 33 years ago. It's barely changed.

Tom Hill: Looking forward to tonight's game. Good old cup game but Manchester United's team is still insanely strong in comparison!

Charlie: I thought Valdes would start to be honest. Strong line-up from Louis van Gaal.

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Former Cambridge United and Manchester United striker Dion Dublin

"When I played there the Abbey Stadium was a ground that not one football club enjoyed going. As soon as they saw those floodlights they must have thought 'oh no, here we go, get those tin hats on we're going to get a fight against Cambridge United!'

"The car pak still hasn't been tarmaced! The home dressing room is still the same with quotes on the wall such as 'attitude drives performance' and 'the harder I work, the luckier I get'. Cambridge United were also famous for their cold showers as well! It was a club that turned me from a boy into a man."

Hometown boy

Getty/CUFC

You've probably seen a fair amount of Luke Chadwick this week as the former Manchester United winger prepares to face the club with his boyhood side.

Chadwick, 34, is on the bench tonight after injury but if he can stand up, he must surely be involved.

Chadwick spoke to our very own Chris Osborne back in May about his surprising decision to go and play for the side who were then playing in the Conference. He helped them to promotion and has been a regular when fit this season too.

With unusual and remarkable honesty, he said: "From the moment I went there I don't think I truly believed I would be a regular Manchester United player.

"I just wanted to play football. I didn't want the fame and stuff that came with it. In the end I think I was happy to get away from United. It's a fantastic club and I wouldn't say a bad word against it.

"But I don't think I was really cut out for it. I wouldn't have enjoyed staying there. You've got to be something special to play at the club for a long period of time."

Up for the Cupset?

BBC

Text us on 81111

We've discussed the best FA Cup shocks a lot this season - but what is the most surprised you've ever been at another, non-football sporting moment?

AP

Tom, Sheffield: Surely has to be Steven Bradbury winning gold in 2002. A true underdog story, if a little lucky..

Bradbury was left to cross the line as winner after four skaters came tumbling down in the final.

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Team News

Hosts Cambridge are unchanged from the team which beat Newport 4-0, so Luke Chadwick is on the bench.

Cambridge XI: Dunn; Tait, Nelson, Coulson; Taylor; Hughes, Champion, McGeehan, Donaldson; Elliott, KaiKai

Join the debate at #bbcfacup

@jamesobviously

James: Pitchside. Excited.

Goodbye Fletch?

PA

With West Ham and West Brom circling, tonight could well be midfielder Darren Fletcher's final game for Manchester United after 12 years in the first-team squad. He is on the bench.

Interestingly, the 30-year-old is the only remaining member of the Manchester United squad to have won the FA Cup. Fletcher was part of the side which beat Millwall 3-0 in 2004 - United's last victory.

Former Cambridge United and Manchester United striker Dion Dublin

"When you mention Cambridge these days people don't really think of football - they think of education and intelligent people. Over the period of my four years here with the motley crew I played with, football was pretty much top of the list. It was a small club that hadn't really achieved that much, in Division Four at the time, we didn't really know what would happen. But all the players in that squad - people like Steve Claridge, Liam Daish, Lee Philpott - had the same drive and work ethic."

Team News

Man Utd

There is no Wayne Rooney in the Manchester United squad. Louis van Gaal makes three changes from the side which started at QPR last weekend, Adnan Januzaj is back and goalscorers Marouane Fellaini and James Wilson both start.

Man Utd XI: De Gea, Jones, Rojo, Blind, Valencia, Carrick, Fellaini, Januzaj, Di Maria, Wilson, Falcao

BBC Sport chief football writer Phil McNulty

"Cambridge Head Coach Richard Money knows the odds are against his League Two side but this experienced figure has seen enough of the FA Cup not to dismiss his side's chances, even against Manchester United.

"In his programme notes he writes: "I have no idea what percentage of a chance anyone in their right mind would give us. But however small that percentage is it definitely isn't zero."

'No easy games'

EPA

Manchester United manager Louis van Gaal insists he is not taking Cambridge, who are 12th in League Two, lightly.

"Cambridge play very direct, with long balls," said the Dutchman. "They have five or six players above 1m 90cm [6ft 3in] so for us it's difficult to defend and that's why you have to prepare yourself very well.

"It's not so easy to beat Cambridge United.

"On Wednesday PSV Eindhoven, who are top of the first league [the Eredivisie] in the Netherlands, lost against the third team of the second division, Roda JC. Ajax, Feyenoord and PSV are out [of the KNVB Cup]. That's remarkable.

"Surprises shall happen also in the FA Cup. There are always surprises and I hope we are not the surprise. It's another opponent with another playing style with other players and we have to beat them."

Join the debate at #bbcfacup

With 75 league positions, 70-odd thousand seats and millions and millions of pounds between Cambridge and Manchester United, a home win tonight would go down as one of the biggest Cupsets in living memory.

We've discussed the best FA Cup shocks a lot this season - but what is the most surprised you've ever been at another, non-football sporting moment?

Getty Images

Could you not believe your eyes when Usain Bolt false-started at the world championships? Left mute when Rafa Nadal was knocked out at Wimbledon early doors? Stunned by Mon Mome winning the National?

Get in touch at #bbcfacup, pop on to the BBC Sport Facebook page or BBC Sport's Google+ area.

You can also text us on 81111 in the UK only - don't forget to say who you are and where you are texting from.

Last time we met

PA

These sides have met before on just two occasions - both legs of a League Cup tie in 1991.

Manchester United won the first leg 3-0 thanks to goals from a 17-year old Ryan Giggs, Steve Bruce and Brian McClair. The second leg at the Abbey Stadium was drawn 1-1. Future Man Utd striker Dion Dublin scored for Cambridge while McClair was again on the scoresheet for the Red Devils.

I couldn't find a picture of Dion bagging in that game but here he is at future home Highfield Road. Magnificent.

Sing when you're winning

Getty Images

Are you the loudest voice in the stands at your club's matches? Well this one might be for you...

BBC Sport has teamed up with Songs of Praise to offer a fans' choir the chance to sing 'Abide With Me' before the 2015 FA Cup final at Wembley in May.

The choir will be made up of one fan from each of the 64 teams which made it to the third round.

Applicants need to go here to enter.

Queens Park Rangers defender Rio Ferdinand

Getty Images

"I'm going for 3-0 to Manchester United in this FA Cup tie. Watch out for Sullay Kaikai (on loan from Crystal Palace) for Cambridge United."

"You can do it Cambridge!"

Getty Images

Ghana and Crystal Palace forward Kwesi Appiah scored six goals in 19 league appearances on loan at Cambridge this season - and two more in the cup. His stay at the Abbey Stadium came to an end on 10 January, but he sent this message to his former team-mates from the Africa Cup of Nations, via the BBC World Service.

"Sorry I can't be there to support you or play, but good luck guys - you can do it. There are always big shocks in the FA Cup so why not be one of them?"

That's the spirit Dion!

Former Cambridge United and Manchester United striker Dion Dublin

"The FA Cup nights when I played at Cambridge United were special - the stands were jam packed, there wasn't a spare seat or place on the terrace to be had. We just seemed to roll teams over with shear power and determination. And when we'd win games the supporters would be straight on the pitch. Manchester United will play the way they do, but this game is at the Abbey Stadium. Anything can happen!"

Vote

Can Cambridge cause a shock or will Manchester United simply be too strong?

Have your say now by voting at the top of this page. The vote will close at 19:45 GMT and terms and conditions can be found here.

Cow corner

BBC

Beware the cows if you are an away fan at the Abbey

Wayne Rooney, Angel Di Maria and Radamel Falcao have seen the world playing football - but have they ever had to make their way through a bovine gauntlet to get to the ground?

At the Abbey Stadium, entrance to the South Stand, which houses away supporters, is through Coldham's Common. Between April and November it is home to dozens of English Longhorn cows.

It is not unusual in Cambridge, where cattle owners can receive permission to graze their livestock on the public commons. The Commons Registration Act of 1965 states that Coldham's Common can hold "geldings, mares and cows to a total of 124 beasts".

"I've run through cows in pre-season," said ex-Cambridge striker John Taylor. "It was OK as long as they stayed away from me. I was petrified of them. Cows are too big, aren't they?"

They are John. Massive.

War of the wages

Cambridge are unbeaten so far in 2015 and are not bereft of players that can play. Former England youth international Ryan Donaldson scored three goals at Wembley last season, Crystal Palace youngster Sullay Kaikai is a box of tricks while Norwich's on-loan prodigy Cameron McGeehan scored twice on his debut on Saturday and has "a terrible habit of giving the ball to someone with the same shirt" according to U's boss Richard Money.

EPA

Speaking of money, Cambridge's wage bill last year was reportedly a mere £1.25m. Wayne Rooney earns that in just over a month and the Red Devils' total for last season stood at a whopping £214.8m. In the true spirit of the FA Cup, this a real David v Goliath encounter.

"Cambridge will come out flying"

Former Manchester United striker Dion Dublin

BBC World Service

"Everything is going to be different for the Manchester United players. The changing rooms aren't big, and they will have to bob their head down to go down the corridor that takes them to the pitch. It's down to the individual to respect where they are going to and where those Cambridge players are trying to get to.

"You've got to go there and say: 'In order to beat them we are going to have to be at the top of our game'. I think United will have too much quality but it's applying that quality on the day. Cambridge will come out absolutely flying."

Think of football in Cambridge and you probably think of (if anything) long ball, hoofs, Dion Dublin, Fever Pitch, long grass and dodgy gamesmanship.

John Beck's side of the late 1980s and early 1990s produced nothing short of a miracle - climbing the footballing ladder from Division Four to the play-offs in what is now the Championship. All of that on a shoestring budget, in a tiny ground and with nothing but contempt from outsiders who sneered at their approach.

Empics

John Taylor returned to play for Cambridge United between 1997 and 2004

"John Beck kept the grass in the corner long, put a bit of sand in the corners," recalls Cambridge's record goalscorer John "Shaggy" Taylor.

"We had cold water thrown over us before the game to wake us up. He knew there was a reason for it.

"Some of the things were a bit quirky. But people couldn't handle the way we played."

Quite right too. Can the current side produce more miracles tonight?

Dan Walker

BBC Sport

"I believe this is the 'Urinal of Dreams'

@mrdanwalker

Manchester United have arrived at Cambridge and Louis van Gaal has been out on the pitch, checking it out. I've seen reports that there is no Wayne Rooney tonight but that is as yet unconfirmed. Full team news should be with you in around 15 minutes.

BBC Sport chief football writer Phil McNulty at the Abbey Stadium

BBC

"It's another FA Cup trip into the unknown for Manchester United manager Louis Van Gaal. The third round took him to Somerset and a meeting with Yeovil - the fourth has him here at the Abbey Stadium to face Cambridge United.

"Cambridge are 76 places below United but - in front of a national television audience - what an opportunity for Richard Money and his players to write their name into folklore.

"Freezing temperatures here just off Newmarket Road - but Yeovil provided the perfect dress rehearsal for Van Gaal for tonight's test."

Wembley again?

Manchester United boss Louis van Gaal learned the hard way that teams from the English lower leagues should not be underestimated on their own patch after MK Dons thrashed them 4-0 in the League Cup. However, a banana skin was safely negotiated when they beat Yeovil in the third round.

Before that match he used a Dutch saying, "Death or the Gladioli", to describe the "all or nothing" attitude lower-league teams take into cup matches like this.

Cambridge may be the lowest-ranked team left in the fourth round but they are a club on the rise. They ended their nine-year spell in non-league by winning the Conference play-off final last year - one of two triumphs at Wembley they enjoyed last season.

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Lower-league hopefuls against Premier League royalty. Multi-millionaires against men who have to make do with just 'a very comfortable' income.

Argentines and Colombians against ex-Northampton, Bishop's Stortford and Royston Town players. Louis van Gaal against Richard Money. This really has got all of the ingredients for a classic FA Cup tie.

It's no wonder Gary Lineker and the crew have rocked up really is it?

Back from the brink

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Ten years ago, Cambridge United were relegated to the Conference after 35 years in the Football League. Worse, they went into administration, had to sell their ground and were facing going to the wall.

Times were hard at the Abbey Stadium - but the U's have bounced back.

Back into the Football League last summer, back into the limelight tonight thanks to the FA Cup visit of Manchester United.

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"Dave! Dave! Get a brush! The press are here - ah, too late..."

Lights! Camera! Action!

Let's bring the glamour to Coldham's Common...