Manchester United boss Sir Alex Ferguson felt Chelsea were fortunate to finish last night's 3-3 thriller with eleven men.

Ferguson was furious at the performance of linesman Darren Cann, who failed to notice a foul from Gary Cahill on Danny Welbeck after the striker raced through in the first half.

"They should've had a man sent off in the first half," Ferguson said.

"Danny Welbeck's clear through and he was brought down. Okay, it's outside the box, (but there was) no decision.

"That linesman, who's given a penalty kick against us from 40 yards away last year against Liverpool, this year against Arsenal - and he can't see that?

"I don't blame Howard Webb - he needed help in that situation and he didn't get it.

"That assistant referee, who's all too happy to flag at Old Trafford for penalty kicks, didn't give them."