Manchester United will assess Wayne Rooney's hamstring injury ahead of the UEFA Champions League clash with Schalke, but Darren Fletcher will be involved in the semi-final second leg.
Rooney did not take part in training on Tuesday morning and is a concern for the visit of German side Schalke on Wednesday evening.
The striker scored in the 2-0 win in the first leg a week ago, but could miss out at Old Trafford as United look to tie up a place in the final.
Sir Alex Ferguson had already suggested Dimitar Berbatov and Michael Owen will start against Schalke, and will give Rooney a fitness test on the day of the game.
"No, he didn't train," said the United manager.
"He had a tight hamstring so we left him today, but we'll see what he's like tomorrow."
However, the Red Devils are boosted by the availability of Fletcher after the Scotland midfielder missed the last two months due to a virus.
Ferguson added: "Darren Fletcher will play part of the game tomorrow night. He's working hard and he'll be involved."