Barcelona and Juventus are keeping tabs on Nemanja Vidic's situation at Manchester United. The People says Vidic's Manchester United future is in doubt again, with Spanish giants Barcelona and Italian champions Juventus trying to lure away the Old Trafford captain.

Both clubs have indicated their interest in the big Serb defender and will monitor his situation between now and the end of the season, even though he is currently out of action following knee surgery.

Vidic will have one year left to run on his current deal come the end of the season and is unlikely to make a decision on his future until then.

United, who fought off interest from Real Madrid two years ago, must decide whether to offer 30-year-old Vidic, who is likely to be out of action for another seven weeks, a contract extension.

Barcelona are on the lookout for a long-term replacement for Carles Puyol, while Juventus are desperate to add more experience to their back line.

Barca will have around £12million to spend on a defender, while Juve's pot will be closer to £16m.