Nemanja Vidic is doubt for the clash with Chelsea on Saturday because of a stomach virus.
Vidic visited a hospital on Tuesday and missed the match between Barcelona at the Nou Camp.
"Nemanja was 24, 36 hours without eating" said Alex Ferguson. "I don't think he'll be ready for Saturday."
"He had very severe stomach pains, so we sent him off to hospital."
Sir. Alex said Vidic had been under observation until late in the night on Tuesday. He's been improving on Wednesday but he wasn't fit to play against Barcelona in the first-leg in the UCL.
"Let's hope we can get him on Saturday" added Sir. Alex Ferguson.