Anderson comes on for Wayne Rooney, who receives a standing ovation.

Relief around the stadium as United are awarded a free-kick.

Robin van Persie's free-kick takes a deflection and the Gunners have a corner.

Wayne Rooney concedes a free-kick on the edge of the box deep into injury time.

There are three minutes of added time.

The crowd are urging the United players to get forward when they get the ball as the minutes tick away.

Robin van Persie gets a shot in from inside the box but Edwin van der Sar is equal to it.

Arsenal are still playing some good passing football but there's no end product.

The corner is cleared but United lose possession again and Arsenal can come forward once more.

Cesc Fabregas has a shot which is saved by Edwin van der Sar and Arsenal have a corner.

Theo Walcott sends in a high ball towards Robin van Persie but the Dutchman can't make contact and Patrice Evra can clear.

Bacary Sagna is lying off the field after colliding with Wayne Rooney and the advertising boards but looks like he'll be okay.

Cristiano Ronaldo's free-kick is well struck but just wide of the post.

Nemanja Vidic has impressed for United today, as he does well against Robin van Persie in the area.

Ji-Sung Park finds Cristiano Ronaldo who is flagged offside.

The atmosphere has become a little tense inside Old Trafford as we move into the final 20 minutes.

Kieran Gibbs's cross into the area is cleared by Nemanja Vidic.

Arsenal are keeping possession well but not really hurting United.

Andrey Arshavin's corner is caught by Edwin van der Sar.

Kieran Gibbs wins a corner off Cristiano Ronaldo.

Robin van Persie takes the shot which is on target but headed clear by Michael Carrick.

Patrice Evra handles Cesc Fabregas' cross and Arsenal have a dangerous free-kick.

Cristiano Ronaldo sends the ball high and wide after Lukasz Fabianski comes out to challenge Carlos Tevez.

Kieran Gibbs tries a shot from inside the area after some good build-up play from Arsenal but it fizzes wide of the post.

Cristiano Ronaldo's free-kick bounces off Alexandre Song's head and eventually goes out for a throw-in to the visitors.

Ryan Giggs tries a dink over the top towards Carlos Tevez but he can't reach the ball and it goes out for a throw-in.

The surface is very wet now which might suit Arsenal.

Cesc Fabregas drives a ball across the area and Michael Carrick concedes a corner, which is cleared and United can counter.

Kolo Toure does well against Cristiano Ronaldo and forces a goal-kick.

The rain is teeming down now at Old Trafford.

Patrice Evra isn't happy after Robin van Persie fouls him and there's a bit of discussion between the players.

Cristiano Ronaldo's free-kick avoids the wall but goes wide.

There are two minutes of added time.

Nemanja Vidic heads the free-kick away for a corner and Cesc Fabregas's shot is eventually cleared.

Wayne Rooney concedes a free-kick in a good position for Arsenal and makes his feelings known to the linesman.

Cesc Fabregas takes a free-kick which is headed away by Michael Carrick.

Ryan Giggs has a shot but gets underneath it and put the ball over the bar.

Samir Nasri's cross finds Robin van Persie but his header loops into the arms of Edwin van der Sar.

Ryan Giggs takes the corner but it's headed away by Robin van Persie and United build again.

Ryan Giggs makes a good run into the area and wins a corner from Kolo Toure.

Arsenal are seeing lots of possession but can't carve out any clear-cut chances.

Robin van Persie's free-kick 15 yards outside the area is straight into the wall and a chance is wasted by Arsenal.

Samir Nasri tries to find Robin van Persie but the ball is easily cleared by Nemanja Vidic.

Abou Diaby tries to find Cesc Fabregas but he's well marshalled by the United defence and the ball goes out for a goal-kick.

Samir Nasri has a shot which lacks power and is straight at Edwin van der Sar.

Nemanja Vidic and Robin van Persie have a little stand-off.

Bacary Sagna's cross goes behind after a good passage of play from Arsenal.

Andrey Arshavin tries a snapshot but it hits Nemanja Vidic and Edwin van der Sar is able to make the save.

Ryan Giggs takes the free-kick left-footed and it sails high over the bar.

Cristiano Ronaldo wins a free-kick on the edge of the area off Alexandre Song and this is a dangerous position.

Darren Fletcher catches Alexandre Song on the ankle and the Arsenal man stays down.

Bacary Sagna crosses towards the area but Michael Carrick is able to clear.

Nemanja Vidic finds Carlos Tevez but his touch is a little heavy and the ball runs through to Lukasz Fabianski.

Michael Carrick finds Wayne Rooney who heads wide from eight yards out.

Andrey Arshavin takes the corner which is headed away by Ryan Giggs.

Andrey Arshavin runs at the heart of United's defence and wins a corner off Jonny Evans.

Robin van Persie has a great chance but heads over from six yards out.

Wayne Rooney finds Cristiano Ronaldo with a wonderful crossfield pass but Ronaldo tries one stepover too many and loses possession.

Ryan Giggs takes the corner but Lukasz Fabianski comes forward and makes a good catch.

Wayne Rooney tries a first-time shot which hits Kolo Toure and loops over the bar for a corner.

Samir Nasri is in the area but the whistle goes for an apparent handball.

Andrey Arshavin almost finds Cesc Fabregas on the edge of the area but the ball is too strong and United clear the danger.

Cristiano Ronaldo is down appealing to the referee but soon gets to his feet and limps away.

Cesc Fabregas forays forward but fouls Nemanja Vidic and United have a free-kick.

Abou Diaby shoots straight at Jonny Evans and Wayne Rooney tries to release Carlos Tevez who is flagged offside.

It's been an all action start from United with Wayne Rooney looking on top form.

Cesc Fabregas shoots from over 30 yards out and the ball flies wide of the target.

United are immediately on the attack through Cristiano Ronaldo but Arsenal manage to clear.