Manchester United manager Sir Alex Ferguson will not face a disciplinary charge over his criticism of linesman Darren Cann in yesterday's 3-3 draw at Chelsea, Press Association Sport understands.

Ferguson's joy at seeing his team come back from 3-0 down was tempered to an extent by his anger at Cann's decision not to flag for a foul by Gary Cahill on Danny Welbeck after the Red Devils striker raced through in the first half.

The United boss thought Chelsea debutant Cahill should have been sent off as he was the last man, and launched an angry tirade against Cann after the match.

Ferguson said: "They should've had a man sent off... (but there was) nothing, no decision. That linesman (Cann), (has) given a penalty kick against us from 40 yards away last year against Liverpool, this year against Arsenal - and he can't see that? He is all too happy to flag at Old Trafford for penalty kicks."

It is understood the Football Association ruled today that the Scot was within his rights to criticise Cann, and that he did not question the assistant referee's integrity with his comments.

The decision will come as a relief to the United manager, who was hit with a five-match touchline ban and a £30,000 fine last March after the same fixture.

Then, after seeing his team lose 2-1 at Stamford Bridge, Ferguson incurred the wrath of the FA by claiming Martin Atkinson did not referee the game fairly.

Ferguson admitted after yesterday's game that his team had lost two points, rather than gained one despite the epic nature of their comeback.

The Scot's men were 3-0 down after 50 minutes but rallied to snatch a valuable point courtesy of two Wayne Rooney penalties and a late header from substitute Javier Hernandez.

United trail Barclays Premier League leaders Manchester City by two points going into a difficult run of fixtures against Liverpool, Tottenham and away at Norwich, who have only lost three times at home this term.