MANCHESTER, England -- Jose Mourinho has admitted there is a chance Marouane Fellaini could leave Manchester United in the summer.
The midfielder is out of contract at the end of the season and will leave Old Trafford for nothing if a new deal is not agreed.
He is free to negotiate with overseas clubs from January -- although sources have told ESPN FC the Belgian, who rejected an offer in September, will not be sold during the transfer window.
Mourinho says he is "worried" Fellaini could go and he accepts there is nothing he can do to influence the 30-year-old's decision.