Jurgen Klopp celebrated his first win at Old Trafford as Liverpool came from behind to beat Manchester United and boost their chances of a Champions League place.

United struck first through Bruno Fernandes' deflected opener but Liverpool hit back through Diogo Jota's instinctive effort.

Roberto Firmino put his side on top with a well-taken double either side of half-time.

Marcus Rashford pulled one back for United midway through the second half but Mohamed Salah wrapped up the points with a late breakaway strike for his 21st Premier League goal of the season.

Here's all the best reaction from Old Trafford...

• Manchester United 2-4 Liverpool - Match report

Manchester United

Manchester United manager Ole Gunnar Solksjaer to Sky Sports: "They deserved the win. We conceded goals in key moments of the game. We didn't build on the momemtum or break up their momemtum. We gave them at least two goals. Key moments went against us.

"We didn't build on the good times. We should have gone more for it at the start of the game. Sometimes we let them off the hook and let them play out."

More from Solksjaer to BBC: “When you play against good players and good teams you can’t give easy goals away, especially goals in the periods we did.

“We want to win every game we play. We were ready to fight for each other and we did but we made too many uncharacteristic errors."

Manchester United

Manchester United manager Ole Gunnar Solksjaer on fan protests: "Once we were in it was all focus on the game. But it is a different preparation coming in at noon for a quarter-past eight kick-off, it's a long time to be here but I though the boys managed that well.

"Of course it disrupted us a little bit so it's not been ideal but we had to deal with it. Hopefully when we let the fans in on Tuesday it's a good atmosphere. We have waited a long time to let them in so we're looking forward to enjoying the game together."

Liverpool

Liverpool boss Jurgen Klopp to Sky Sports: "Great fight, good game, intense - all derbies should be - and my first win at Old Trafford. Good timing I would say. We needed it. We deserved it. All good. We needed that. It was very intense.

"We are still in the game, in the race. That is all we could have done tonight. It is very intense. We have to recover quickly and go again. We played a good game and did good enough to win so obviously we did a lot of right stuff tonight."

More from Klopp to BBC Sport: “It was exactly what we needed in this situation. We are in a situation where we are under some pressure and need to win the games to have a chance. We came here to play a team in form.

"We have really tough games coming up. West Brom will be completely free of pressure, which can do strange things, Burnley with supporters is a tough one and we will see what we have to do against Crystal Palace.

“We have to win all the games. That’s why the draws we have had against Newcastle and Leeds felt like defeats. Being in a position where you have it in your own hands to qualify for the Champions League is a big thing. Two or three years ago that was our life."

That's all for tonight.

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I'll give a recap of the best reaction to wrap things up.

Manchester United

Manchester United manager Ole Gunnar Solskjaer speaking to BBC Sport: “When you play against good players and good teams you can’t give easy goals away, especially goals in the periods we did.

“We had a good start to the game and we didn’t grab that momentum, we should have done more and just before half-time to concede from a set-play is disappointing.

“When you start the second half with a goal after 70 or 80 seconds it’s going to be hard. We let them off the hook. It is part of learning for this team. We should have capitalised when they struggled.

“We want to win every game we play. We were ready to fight for each other and we did but we made too many uncharacteristic errors."

On Harry Maguire's absence: "Everyone would miss their captain and leader. Harry [Maguire] has been amazing since he came to this club. We will miss a player of that quality but we have players that are ready to step in."

On fan protests: "Once we were in it was all focus on the game. But it is a different preparation coming in at noon for a quarter-past eight kick-off, it's a long time to be here but I though the boys managed that well."

Manchester United

More from Ole Gunnar Solksjaer to Sky on pre-match disruption: "Of course it disrupted us a little bit so it's not been ideal but we had to deal with it.

"Hopefully when we let the fans in on Tuesday it's a good atmosphere. We have waited a long time to let them in so we're looking forward to enjoying the game together."

Manchester United

Manchester United manager Ole Gunnar Solksjaer speaking to Sky Sports: "They deserved the win. We conceded goals in key moments of the game. We didn't build on the momemtum or break up their momemtum. We gave them at least two goals really. Then we scored again, had a massive chance... Key moments went against us.

"Their shape and their pressing is very aggressive. We created our own downfall. The second goal you probably expect no foul there then it's a bad moment to concede just before half time. The third goal we gave them and that's really poor.

"Harry [Maguire] has been really important for us so of course we're going to miss him but he's out so we have to deal with that. It's about regrouping and building our own confidence again as we have two games and a final.

"The attitude was right and the focus was fine, we were ready for it. We didn't build on the good times. We should have gone more for it at the start of the game. Sometimes we let them off the hook and let them play out.

"Tuesday. We need to find ourselves straight away. We need to build that momemtum and confidence. We should go into that final ready."

The Sky pundits have been discussing the moment after full time when Sadio Mane chose not to acknowledge manager Jurgen Klopp...

Graeme Souness: "Disrespectful. If I was the manager I wouldn’t be happy. He should show a bit of respect. It’s disrespectful to the manager and the club. How can he argue? He’s not had a great season and Liverpool have won here 4-2".

Roy Keane: "The player is out of order but when I was a player I didn’t want the manager coming on giving me high fives. If he sees the player upset then back away."

Jamie Redknapp: "We haven’t seen a player do that to Klopp before. It happens, he wants to play and he showed emotion."

Liverpool

More from Liverpool manager Jurgen Klopp, speaking to BBC Sport: “[Roberto Firmino] was very helpful and these kind of things are really important. That’s what we needed to stay in the race.

“We have really tough games coming up. West Brom will be completely free of pressure, which can do strange things, Burnley with supporters is a tough one and we will see what we have to do against Crystal Palace.

“We have to win all the games. That’s why the draws we have had against Newcastle and Leeds felt like defeats. Being in a position where you have it in your own hands to qualify for the Champions League is a big thing. Two or three years ago that was our life."

On Sadio Mane’s reaction: “It was because yesterday I changed things pretty late in training. My boys are used to me explaining and I didn’t. No time, forgot it, whatever. And that was it. It’s all fine."

Liverpool

Liverpool manager Jurgen Klopp speaking to BBC Sport: “Top. It was exactly what we needed in this situation. We are in a situation where we are under some pressure and need to win the games to have a chance. We came here to play a team in form.

"It was tough and the start was not good. We struggled to defend on the wings. They outnumbered us there and it took us a while to adapt to that.

“When we started doing that we were really in the game and scored two goals. Everybody knows this season that the second half is usually United’s half. They usually turn games around but we denied that.

“We played a really good first part of the second half, scored a third goal and then it’s an open game. It’s intense with a team chasing the game and one team defending. The fourth goal was brilliant. Top again from Curtis [Jones].

“We’ve not had this result before so we must have done something right tonight."

Liverpool

More from Jurgen Klopp on Sadio Mane's frustration at the end: "No there's no problem. Yesterday I made a late decision in training to go with Diogo Jota. I would usually explain it but there was no time for that. It is all fine."

On top four hopes: "We are still in the game, in the race. That is all we could have done tonight. It is very intense. We have to recover quickly and go again. We played a good game and did good enough to win so obviously we did a lot of right stuff tonight."

Liverpool

Liverpool boss Jurgen Klopp to Sky Sports: "Great fight, good game, intense - all derbies should be - and my first win at Old Trafford. Good timing I would say. We needed it. We deserved it. All good.

"Top goals. We reacted really well to their goal. We were unlucky in that moment. Bruno Fernandes, we let him go inside. It was unlucky in the centre but the defending in that moment was not good. We didn't do that well in the first 15 minutes but then we got control and we could play the way we wanted to play.

"It was good. All good performances. Our two centre-halves were a little shaky at the beginning of the game with passes but then did a really good game. Trent was in proper shape tonight and played pretty much everything.

"They couldn't chip the ball through to Bruno Fernandes any more and step by step we got control of the game. It was of course tricky at 3-2 but we scored that fourth goal. We needed that. It was very intense. I really thought the midfield played outstandingly well. When Curtis Jones came on he helped a lot. It was good."

Jurgen Klopp's thoughts up next.

Image source, Getty Images

Only Newcastle (29) and West Bromwich Albion (34) have conceded more home goals in the Premier League this season than Manchester United (27)

Don Hutchison
Ex-Liverpool midfielder on BBC Radio 5 Live

I think Liverpool will be looking at Chelsea's and Leicester's next two fixtures. Leicester's next two are Chelsea and Spurs. Difficult fixtures. I think there will be more twists and turns to come.

Liverpool

Liverpool defender Nat Phillips to Sky Sports: "It was a rollercoaster. It was a strange game. It was an ugly match but we had to make it that way at the end to make sure we got the result. It was a big night for us.

"I think we started quite slow. We knew we still had an extra gear. I didn't feel too worried. It was just a matter of time before we started playing the way we could do. To come from behind is always difficult.

"I reacted too late [to Man Utd's opener]. I thought it was going wide at first then I saw it start to curl inwards. It's one of those things."

On it not being an own goal: "That is good news. I am pleased to hear that!"

On top four hopes: "It takes us closer. It's another three points. It's no secret what our objective is and that's to win all our remaining games. We can enjoy it tonight but focus is on the next game.

"We can't look away from our camp. We can't have an effect on that. We have to concentrate on doing our jobs. It's something to build on and learn from. We need to take confidence from it."

Chris Waddle
Ex-Newcastle and England winger on BBC Radio 5 Live

All over the park Liverpool read the game better, they looked sharper, they were really switched on. They knew they needed a result. They went 1-0 down but give them credit, they stepped it up. When Manchester Untied scored again you thought it might lift them but then Salah breaks away and scores. Liverpool deserved that tonight.

Don Hutchison
Ex-Liverpool midfielder on BBC Radio 5 Live

That performance was just incredible. It was not one of Liverpool's most outstanding performances but in the arena we are in and the opposition they were against, that was a really good performance.

Chris Waddle
Ex-Newcastle and England winger on BBC Radio 5 Live

This will give them so much confidence going into the three games and they will think they can win them. I will be very surprised if they don't. With the quality they have on the field and the bench they have enough to win those three games.