Carlos Tevez is unhappy with Manchester United boss Sir Alex Ferguson, it has been revealed.

The Telegraph says Tevez is understood to have been angered by Sir Alex Ferguson's claims, after the 2-1 victory over Wigan Athletic on Wednesday, in which the striker scored the equaliser, that United had "given him an offer" and that the problem was "we are not negotiating with a football club".

Tevez's agent, Kia Joorabchian, said: "There are no issues between Manchester United and the companies because the deal was agreed and signed off two years ago. There is no need for further negotiation. All United have to do is to write a letter confirming they want to take up the option to sign Carlos and it can happen."