Dimitar Berbatov insists he will sweat blood to help Manchester United win a fourth successive title.

The Bulgarian has been criticised for his relaxed approach on the pitch, but he insists he is ready to work his socks off to help the Reds create history this season.

"There is a winning mentality and at United success is expected season after season," Berbatov told the News of the World. "I am aware I came with a big price tag and I am ready to prove what I can do.

“We have a chance to make it four titles in a row and that means making history if we succeed. I would not say my playing style is laid back, it is just a different style.

"I like time on the ball and I like space. If I can get that, then I know I can free up players. I am ready to sweat blood. I want to create and score goals and I know I can be part of a trophy-winning team.”