Patrice Evra was also struck by the bug over the weekend, but has sufficiently recovered and should be in contention.
Park missed training on Tuesday, and will be hard pushed to even make the bench for the Bundesliga champions’ visit. Michael Owen also sat out the session with a minor groin complaint, but should be available.
“Ji-sung has a virus,” Sir Alex Ferguson told his pre-match press conference. “Patrice Evra had it at the weekend. After the Stoke game he felt a bit uneasy – he was in bed on Sunday and didn’t come to training, but he came in for a bit yesterday, came in today and he should be alright.
“Michael should be alright for tomorrow. He had a tight groin in training yesterday, nothing serious. But obviously for the game tomorrow we didn’t want to be pushing that. Other than that everyone’s fit.”
More news from the manager's press conference will follow shortly.