Manchester United are concerned about Park Ji-sung's absence, admits midfielder Ryan Giggs.
The loss of Park to an Asian Cup campaign with South Korea is likely to mean his absence until February.
"We are disappointed Ji is going away at this time because he has been playing so well," said Giggs.
"Any of the lads would have Ji in the team every time because of his work rate and what he puts into the game.
"But this is what the squad is for. We have players who aren't getting games but will be ready to come in and do a job."
