Sir Alex Ferguson admits he will scrutinise his international players' World Cup involvement before finalising his team plans for Sunderland and Chelsea.
The boss faces an anxious wait until his stars return fit and well ahead of a tough double-header over the Easter holiday period in the Barclays Premier League and FA Cup. Clearly there will be plenty of deliberating at Carrington before the line-ups are confirmed for the Stadium of Light and Stamford Bridge.
"Every coach is praying that their players come back fit," Sir Alex told Sirius XM.
"They played last Friday and they are playing tonight. Once I know later this evening how many minutes each player has played, I will start to think about my team for Saturday.
"I have to make sure I have some freshness in the team because we also have Chelsea on Monday lunchtime.
"It is a big ask for our squad and something we need to concentrate on because I need to make sure I pick the right teams."