The prolific hitman was introduced as a substitute in the Red Devils' 2-1 win over Aston Villa in the League Cup final, to score the winner.

But after the match he felt pains in his knee, which cast doubts over his chance to feature against the Pharaohs on Wednesday.

"He got a whack right away," said Ferguson.

"He has been complaining a little about that for a few weeks and was holding it a bit today.

"In fact, I thought we might have to take him off but he wanted to stay on so it was good."

The full extent of Rooney's injury is yet to be determined.

"The doctors are assessing it and I don't know what England are going to do," Ferguson added.