All to play for in UEFA Champions League

Manchester United travel to Munich, while Atletico Madrid host FC Barcelona in quarter-final action.

The four semi-finalists in this season's UEFA Champions League will be confirmed tonight. Picture: AFP.

CAPE TOWN - Manchester United striker Wayne Rooney is likely to take a pain-killing injection in his left foot before he takes to the field in the UEFA Champions League quarter-final second leg match against Bayern Munich at the Allianz Arena on Wednesday evening.

Rooney sustained a chipped bone in his left foot during the first leg of the tie at Old Trafford last week.

That match ended 1-1.

United manager David Moyes says Rooney understands the importance of tonight's game and is keen to be involved in the clash.

"He was able to train and is massively keen to be involved. He's not trained all week, so we need to be wary of that, but we'll do everything we possibly can. He's happy to take an injection to play, which shows his feelings about the game and the club. We need him as well because he's a really important player to the team."

Moyes says they'll do whatever it takes to progress to the last four of the competition.

"It's the second leg of a quarter-final of the Champions League, with the opportunity to reach the semi-final. It's a massive game and one which all the players are looking forward to. We'll do everything we can to reach the semi-final."

Bayern Munich manager Pep Guardiola expects United to "park the bus" at the Allianz Arena tonight, and says United will probably come to defend and try to catch them on the break.

"Obviously when they played at home they attacked a little bit more, but when they play away they will look to defend and defend and wait for the counter. Maybe I am wrong and maybe David Moyes could be thinking differently, but I think they're going to wait back with eight or nine players in the box and wait for our mistake."

The Bavarians will be without midfielders Bastian Schweinsteiger and Javi Martinez, who are both suspended.

Guardiola is however confident that Rooney will be fit and raring to go tonight.

"I bet you a big glass of beer that Rooney is going to play. He's a big player and Rooney is one of the best players I have ever seen in my career. If he doesn't play this game, it's because he has a lot of problems. I am sure he is going to play."

In Wednesday's other quarter-final second leg match, it's all to play for when the top two sides in the Spanish La Liga meet.

La Liga leaders Atletico Madrid host Barcelona at the Estadio Vicente Calderon, with the score line locked at 1-1.

Both games kick off at 8:45pm.