And that's it! United beat Olympiakos 3-0 on the night and 3-2 on aggregate. They are in the draw for the quarter-finals on Friday.
Fellaini holds the ball up well again. The referee blows, free-kick to United.
Fellaini does really well to hold off two players and win a corner.
We will have five minutes of time added on at the end of the half.
Marcano receives a yellow card for something he said to Van Persie while he was down.
Fellaini is coming on for Van Persie.
Van Persie is still down. The stretcher is on.
Van Persie is down and in some pain. He's holding his hamstring.
The ball is in De Gea's hands. The Spaniard's long kick is a good one and Rooney gets a free-kick.
Excellent saving header from Jones. Another Olympiakos corner. Pressure really beginning to build.
Rooney, as he has done all game, tracks back. Corner for Olympiakos.
The Greeks really have to go for it now. Campbell looks for Manolas but United will take that. Goal-kick.
Rooney then fires a curling effort well wide.
Vergos, who has only been on for a minute, concedes a free-kick.
Vergos on Fuster off.
Welbeck off Fletcher on.
De Gea claims and his throw to Young is given away. Back come the Greek champions.
CHANCE! De Gea again does well to save from Dominguez and Campbell's follow up goes over.
Young concedes a corner and Olympiakos have another chance to swing one in.
United pegged right back at the moment. Moyes waving his defence out.
Young on for Valencia.
Carrick does really well in midfield. Valencia's cross is cleared and the Greek side break.
Machado on for Salino.
Salino is quick but he won't catch that one.
Jones loses the ball inside the area but Ferdinand is on hand to help him out.
Salino and Campbell attacking Evra down the right whenever they get the opportunity. Salino cuts inside this time but Jones heads away.
Rafael with time inside the box and he wins the corner.
Giggs slides in to win the ball back for United. The crowd urging United forward again.
Dominguez with a sweeping ball but it's cleared by United. Moyes's side sitting deeper now. Are they going to try and hold on? Very risky.
CHANCE! Salino gets the better of Evra but Fuster's shot is straight at De Gea.
Ndinga with time and space in midfield but his pass is a poor one.
Giggs with an awkward ball back to De Gea. He clears but it was far from easy.
Valdez has a go just outside the box. Over.
Salino kicks the ball away after being flagged offside. Yellow card.
Evra receives a yellow card and will miss the first-leg of the next round should United qualify.
Campbell tracks back to tackle Welbeck. Good defending.
Giggs with a lovely piece of skill but Jones hammers over.
Rafael looking to play in Valencia down the right and United win a corner in front of the Stretford End.
Marcano with a fierce challenge but he won't get the corner he wants.
Perez off Valdez on.
Perez misses a great chance but the flag is up.
Dominguez hits but it takes a wicked deflection. Corner.
Valencia concedes a free-kick in a dangerous area. The tie is still far from over.
GOAL! It was Van Persie who took the free-kick and he finds the bottom corner with the 'keeper rooted to the spot. 3-0 United lead and 3-2 they lead on aggregate.
Van Persie stands over the free-kick. He looks like he's going to hit it.
Great running from Rooney and Welbeck despite not controlling the first pass manages to win a free-kick.
Jones gets the better of Campbell and wins the throw.
CHANCE! Perez steaming into the box but his header is wayward. Warning to United.
Giggs switches play well and United appear to be playing with more confidence.
Giggs wins a free-kick. Perez is still down holding his back.
United start the second half. One more goal will do for the home side, providing they don't concede of course!
What a half of football that was! United lead 2-0 on the night and it's 2-2 on aggregate.
GOAL! Rooney is allowed time inside the area and Van Persie makes no mistake from ten yards out.
Evra does really well down the left but his cut-back to Rooney is intercepted just in time. Unlucky.
Rooney helping his defenders and heads away for a throw.
Rooney does well in the area but is quickly closed down. Valencia then dives in. Free-kick to Olympiakos.
Maniatis will have to be careful. He keep conceding fouls.
Valencia then thought he had a penalty at the other end but the referee waves away the protests.
CHANCE! What a double save from De Gea. First from Fuster and then Dominguez with his foot. Exceptional.
Ndinga trips Welbeck and United have another free-kick in a dangerous area. Giggs's cross is a long one though and Olympiakos have a goal-kick.
Carrick is now down holding his leg. Should be OK.
Van Persie dispossessed in midfield and a little fortunate to get the free-kick.
Van Persie with a quick throw to Valencia and United win a throw deep inside the Olympiakos half.
Holebas forcing his side back. Good pressing from United.
CHANCE! Van Persie whips in a corner and Roberto somehow tips over from Evra.
Holebas standing up to the challenge of Valencia well down the right. Marcano concedes the corner.
Perez with a wild cross from the right and that won't trouble De Gea. Goal-kick.
Perez thinks he is in down the right but the ball runs out of play.
Valencia with a driven ball in from the right but Roberto gets down well.
Second time the referee has got in the way.
Rafael defends well and United look to break again. Important United keep the pressure on from here.
Campbell is down holding his head. Olympiakos get the opportunity to regroup.
Dominguez with a floated pass but it's deflected and Olympiakos win a corner.
'Attack, attack, attack' cry the United fans...
United get a Champions League lifeline! They lead 1-0 on the night and now trail 2-1 on aggregate.
Van Persie scores. United back in this in a big way.
PENALTY to United. Manolas fouls Van Persie in the area.
Good control on the chest from Van Persie but Olympiakos are in quickly to clear.
Scrappy in the midfield as Giggs doesn't time his pass. Goal-kick.
United corner from the right. Delivered by Giggs but his second cross is claimed comfortably.
Great run from Welbeck and Maniatis gets back to concede a throw.
Lofted ball into Van Persie but Roberto arrives and claims well.
That's more like it from United. Far more aggression to their game. Valencia is then offside.
CHANCE! Giggs with a ball from the left and Rooney's header hits the post and spins out.
Valencia had room for a moment but Olympiakos recover well.
Evra makes a late surge into the box but he can't control Giggs's quick throw.
CHANCE! Campbell left Jones and Perez fires over from eight yards out.
Welbeck makes a run down the right and wins a corner for the home side.
Giggs reacts quickest in midfield but is then dispossessed. Maniatis recovered well.
Olympiakos working really hard. Valencia then dives in and receives a warning from the referee.
Olympiakos looking long for Campbell whenever possible. Ferdinand walks out of defence with the ball.
Rooney flying down the right and crosses to Van Persie but Roberto smothers.
Carrick then receives a yellow for a late challenge on Perez.
Dominguez kicked Valencia's legs from under him and recives a card. Game hasn't settled yet.
Valencia back on but he arrives late on Campbell. Free-kick.
The game gets going again but it's the Greeks who are attacking.
Valencia down with a really badly bruised head.
Yellow card for Manolas for a trip on Welbeck.
Early groans from the Old Trafford crowd. Giggs does well down the left but Perez comes away with the ball.
Manolas left Rafael for dead but the cross was cleared away by Ferdinand. Nervous times.
Dominguez with a long delivery but Rafael clears at the second attempt.
Salino is fouled by Jones. Free-kick.
Olympiakos passing the ball around well and enjoying a decent spell of possession.
Valencia makes an early foul and the visitors claim a free-kick.
Olympiakos will get us started and away we go...
Never mind David Moyes feeling nervous some of the Olympiakos players don't look completely comfortable. We'll see soon enough.
The players are making their way out of the tunnel. Here we go...
Giant flags on the pitch before the game. Will the crowd do their bit tonight? They were fantastic against Liverpool despite the 3-0 scoreline.
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Olympiakos, meanwhile, have lost all seven of their Champions League games in England, conceding at least two goals every time and never scoring more than one.On this occasion, though, Olympiakos know that just one away goal will leave United needing to score four, and boss Michel has promised not to sit back on a 2-0 lead.Olympiakos head to Old Trafford after clinching the Greek Super League title with a 2-0 win over Panthrakikos at the weekend, which left them 18 points clear at the top of the table with just five games to play.
Moyes can nevertheless draw some positives from history, with United having an excellent record against Greek opposition at home.The Red Devils have also won their three previous matches at Old Trafford in Europe this season, making it safely through as group winners before Christmas.
While confidence will be at a low ebb following a demoralising defeat by fierce rivals Liverpool, Moyes acknowledges that United have a duty to deliver an improved performance and sees the midweek encounter as an opportunity to provide everyone at the club with a major lift.
Manchester United must overturn a 2-0 deficit against Olympiakos if they are to reach the quarter-finals of the UEFA Champions League.David Moyes was in defiant mood on the eve of the match as he insisted that nothing had changed regarding his future in the wake of a 3-0 loss at home to Liverpool on Sunday, but it has been a miserable first season in charge at Old Trafford for the manager and European elimination would only increase the pressure.A place in the top four of the Premier League is effectively out of reach and United's last hope of achieving success is to go further in the Champions League, with Moyes adamant that they can bounce back.
Olympiakos subs: Megyeri, Papadopoulos, Bong, Paulo Machado, Samaris, Valdez, Vergos.
Manchester United subs: Lindergaard, Fellaini, Fletcher, Januzaj, Kagawa, Young, Hernandez.