Manchester United wait on Rafael fitness ahead of Chelsea tie

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Manchester United manager Sir Alex Ferguson has a major injury doubt over Brazilian defender Rafael ahead of tomorrow's Champions League quarter-final second leg against Chelsea at Old Trafford.

The 20-year-old suffered a knee injury in last week's 1-0 first-leg win at Stamford Bridge.

He was carried off on a stretcher but scans have shown there was no ligament damage and, although Rafael missed Saturday's Barclays Premier League win over Fulham, Ferguson did expect him to be fit for tomorrow's decider.

However, Rafael was restricted to running only at United's Carrington training complex this morning.

And unless he makes a very speedy recovery, it appears his place will go to John O'Shea.

"Rafael did a bit of jogging this morning," said Ferguson.

"Hopefully he will be able to be ready for tomorrow but I am not sure about it.

"There is a little doubt and it is not something I want to be risking in a major game.

"He really has to do something special tomorrow morning to change my mind about it."