Fergie: Man United fans must stop abusing Arsene Wenger

Sir Alex Ferguson has told Manchester United fans to stop abusing Arsene Wenger.

Ferguson is appalled by the sickening chants directed towards the Arsenal manager by United supporters and does not want to hear a repeat at Sunday's title showdown at the Emirates.

"It's unavoidable the way that managers do get abused today," said the United boss. "I get it myself, although sometimes I can't hear these chants and can't make them out, and Harry Redknapp got some terrible abuse at Villa Park, I think.

"There has to be a line drawn somewhere and I know there has been some terrible abuse from our fans towards Arsene Wenger.

"There has to be a line drawn and they know that themselves. They've got to control that part.

"Our supporters as they showed on Wednesday, there's no better support. They are fantastic supporters and I was really proud of them on Wednesday.

"But they've got a team to support and they don't need to worry about anybody else. They should be proud of the team they support and hopefully that's what they will do."

Ferguson claims he is also baffled by Rio Ferdinand's four-match for his clash with Hull's Craig Fagan and confirmed United were considering appealing against the additional fourth game handed out because the FA deemed his not-guilty plea as "frivolous".

However the FA could add another match to the England star's suspension if United's appeal fails, which would rule him out of the Carling Cup Final on February 28.

Ferguson appears reluctant to take this gamble and said: "We have to decide whether to appeal it because there are conflicting ways of viewing the decision.

"I watched a game, Charlton against Leyton Orient, on Monday night and the Leyton Orient goal was done with an elbow on the Charlton player - three times - as the player ran with the ball and nothing happened.

"So there's a lot of confusion in terms of the decisions. We have accepted that Rio is banned and we will get on with it."