Manchester United skipper Nemanja Vidic has been handed the task of deciding whether he is fit enough to face arch-rivals Liverpool on Saturday in the Premier League.

Vidic has been out with a calf injury since sustaining the injury against West Brom in the opening day of the season. He made his comeback when he played for Serbia on Tuesday but club manager Sir Alex Ferguson will leave Vidic to decide whether he is fit enough to play twice in four days.

The return of Vidic could be a huge boost for United who have been shaky in defence recently with the lack of experience amongst youngsters Phil Jones and Chris Smalling all too evident.

The big question mark is whether Vidic is ready for the game, said Ferguson. He's certainly had his first game for Serbia on Tuesday, played a full game, so it's certainly a consideration because he's such a good competitor.

He came in yesterday and felt OK. But the Liverpool game is such an intense, draining game that you want everybody to be 100% so it maybe more down to how he feels himself really.

Another United player who was expected to make his return at Liverpool was Tom Cleverley, who sustained a foot injury against Bolton in September. But apart from full-back Rafael, who is a long term absentee, United have no other major injury concerns as all players returned from the international break without concerns.

All the players have come back from the internationals fit, which is always a blessing, Ferguson said. Sometimes they don't, but fortunately this time they are all okay.

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