Andre Villas-Boas and Sir Alex Ferguson both lambasted the performance of the match officials in the 3-3 draw between Chelsea and Manchester United at Stamford Bridge.

Chelsea boss Villas-Boas blasted referee Howard Webb for giving United a second penalty for a dubious foul from Branislav Ivanovic on Danny Welbeck.

Ferguson was thrilled to see his team come back from 3-0 down to steal a point, but he was furious with linesman Darren Cann, who failed to notice a foul from Gary Cahill on Welbeck after the striker raced through in the first half.

Villas-Boas said: "The second penalty was very, very dubious. I don't know if Howard Webb had the correct angle."

Ferguson has a history of disagreements with Cann after the linesman gave penalties against his team when they were playing Arsenal and Liverpool.

"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?

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

Chelsea's scorers were Jonny Evans (og), Juan Mata and David Luiz, before two Wayne Rooney penalties and a Javier Hernandez effort levelling matters.