Martin Keown wishes referee Michael Oliver 'good luck' as he warms up on the Old Trafford pitch. Could be a big game for Oliver tonight. Not as busy as it would be if Keown was playing mind...

How are your nerves? It should be a cracking atmosphere tonight with 10,000 Arsenal fans packed in at Old Trafford.

The usual allocation for away fans at Old Trafford in the Premier League is nearer to 3,000. Raise the roof!

Nathan Hingley: Januzaj should be starting, Di Maria impact sub. Mata wasted on the bench.

Pete Haines: Arsenal will bottle it as usual. 3-1 @ManUtd

Dara Sheahan: LVG needs to let the players off the leash and trust their instincts. That'll let the stars shine bright.

Rick in Manchester: Phil Neville says we should be impressed with Louis van Gaal's team set up, yet he possesses a team that has had £200m-plus investment over the last two years and they're awful to watch.

BBC Radio 5 live

Former Manchester United goalkeeper Peter Schmeichel speaking to Kelly Cates: "When you play Arsenal, it's one of the biggest ties possible. Two of the most successful clubs in the history of this competition.

"It's realistically the only opportunity either side has left this season to win a trophy, so it's a hugely important match."

Former Manchester United defender Phil Neville

"In 20 years of playing football, that match at Villa Park in 1999 was the greatest game I was ever involved in.

"It was the game that went on to win the treble for us. Martin Keown has nothing but nightmares from that game.

"This fixture was probably one of the greatest I played in, it had everything in terms of a rivalry. Great players, great goals, controversy, the lot.

"Lots of things were always happening around the action and tonight will be no different."

April, 1999.

Mr Oizo was at number one with his annoying, bass-heavy 'Flat Beat', the minimum wage was introduced at £3.60 an hour for workers over 21, and these sides served up one of the great FA Cup games - perhaps one of the best games I've ever seen - in the semi-final replay at Villa Park.

Younger readers may not have ever seen the classic - so fill your boots here! It was a brilliant, brilliant match.

Image source, Getty Images

Stunning goals, a red card, a penalty miss, disallowed goals - you name it. Ryan Giggs' winner alone is a legendary moment. Though surely Lee Dixon or Martin Keown could have got a challenge in?

I would love it, love it, if tonight's game was half as good...

Former Manchester United keeper Edwin van der Sar:, external Done with the working day and full speed home to watch the FA Cup.

Luke Shaw starts his third FA Cup game for Manchester United, the 19-year-old in for suspended defender Jonny Evans. Otherwise it is the same line-up as the one that won 1-0 at Newcastle last Wednesday.

Arsenal manager Arsene Wenger makes five changes to the team that won 2-1 at QPR last time out, with former Manchester United striker Danny Welbeck returning to the team. Keeper Wojciech Szczesny is back after illness, while defenders Laurent Koscielny and Nacho Monreal return along with midfielder Alex Oxlade-Chamberlain.

Striker Olivier Giroud, who has scored seven and assisted four goals in his 11 FA Cup appearances for Arsenal, has to make do with a place on the bench.

Manchester United XI: De Gea, Valencia, Smalling, Rojo, Shaw, Blind, Herrera, Di Maria, Fellaini, Young, Rooney.

Arsenal XI: Szczesny, Bellerin, Mertesacker, Koscielny, Monreal, Coquelin, Cazorla, Oxlade-Chamberlain, Ozil, Sanchez, Welbeck.

'Panic' by the Smiths rings out at Old Trafford as Wojciech Szczesny goes through his warm-up. Will the recalled Arsenal keeper bring calm, or panic, to his back four tonight?

Former Manchester United defender Phil Neville

"There's still the fierce rivalry between the two sides. Tonight will be a different game from what we saw back in 1999. It will be more technical, there's no Roy Keane, Patrick Vieira, David Beckham or Ryan Giggs. What I see is more technical players.

"Arsenal have always come to Old Trafford full of confidence, but never performed.

"They always seem to bottle it. But they've got to perform tonight and look to hit United on the counter. It's an intriguing game and whoever wins tonight, it will give them that momentum to finish in the top four."

BBC Radio 5 live

There's full match commentary on BBC Radio 5 live from 19:45 GMT.

Join John Murray and Alan Green with former Manchester United defender Phil Neville in the summariser's chair on 909 and 693 MW.

You can also listen by choosing the Live Coverage options at the top of this page as well as through the BBC Sport app on mobile and tablet.

Phil McNulty
BBC Sport chief football writer at Old Trafford

"11 v 11 at Old Trafford tonight. A meeting between the FA Cup joint record winners Man Utd and Arsenal.

"If Louis van Gaal is to win a trophy in his first season in charge at United, then it has to be with a 12th triumph in this great tournament. And with Arsenal realistically out of the title race and fighting for survival in the Champions League after a 3-1 loss at home to Monaco in the last 16, the stakes are arguably higher than they usually are when these two fierce rivals meet."

Image source, BBC Sport

Which former Manchester United or Arsenal players would you most like to bring back into the current side, and why?

Logan Bond: Cristiano Ronaldo back at Manchester United. Will never forget the roar that went through my house when he scored that free-kick at the Emirates in the Champions League semi-final.

Rich in Somerset: Bergkamp, Bergkamp, Bergkamp.

Sin in Birmingham: Can we have a new spine please at Man Utd? Stam, Keane & Cantona would do the job!

Former Manchester United defender Gary Neville:, external Looks like Rooney up top/Fellaini behind.

Arsenal

Arsenal make five changes from the side which beat QPR as former United man Danny Welbeck starts up front.

What sort of reception will he get?

Antony Reader: I think we'll see something from Falcao tonight.

Saim Naveed: Whatever Van Gaal says he wants the FA Cup as much as a top-four finish.

Former Manchester United defender Phil Neville

"Manchester United have been getting lots of criticism for the performances.

"It's not free-flowing, but you can't argue with only two defeats in 22 games. Louis van Gaal's objective at the start of the season was to finish in the top four and win a trophy and he's still on target for that.

"So I think you have to be impressed with the way he has set up his team."

Man Utd

Manchester United make one change from the side which beat Newcastle - Luke Shaw replaces the suspended Jonny Evans.

Full team news to follow.

Arsene Wenger looks incredibly relaxed, he's been chatting with Martin Keown down by the tunnel, signing autographs and now having an extensive chat with somebody else. Not a care in the world. What team has he chosen tonight? We shall find out in a few minutes.