Rio Ferdinand has been charged over an incident during United's victory over Hull. Photograph: Mike Egerton/Empics Sport
Sir Alex Ferguson's insistence that the behaviour of his players "has always been perfect" has been undermined by the news that Rio Ferdinand is facing a three-match ban for violent conduct. The defender could miss the second leg of Manchester United's Carling Cup semi-final against Manchester City tonight, the match against Arsenal on Sunday and the home game against Portsmouth the following weekend after knocking the Hull City striker Craig Fagan to the ground during the 4-0 victory last Saturday.
Ferguson has banned Sky's cameras from his press conferences at the club's training ground after he learned that the television company – at the Football Association's request – produced the pictures that have led to Ferdinand being charged. The United manager also believes Sky is partly to blame for the bad feeling surrounding tonight's match, after repeatedly broadcasting pictures of Gary Neville showing his middle finger to Carlos Tevez in last week's first leg.
Ferdinand's charge came a few hours after Ferguson said his players' behaviour "has always been perfect" and expressed irritation about the way their conduct was under scrutiny this week. The FA has written to United and City, after being contacted by Greater Manchester police, to stress the importance of the players not adding to an incendiary atmosphere.
Ferguson rounded on Sky's reporter. "You try to promote yourself – just leave the football to us, OK?" he said. "You come out with some nonsense. I don't pay any attention to a lot of that. The players' behaviour has always been perfect. They play within the rules of the game. We've never had any issues with big games."
Ferguson's defence of his players omits previous incidents in Manchester derbies, including Roy Keane's infamous challenge on Alfie Haaland and Neville being sent off for headbutting Steve McManaman. The United manager said: "I don't know why you are going on about it. Look at the record. Unbelievable!"
United yesterday announced a £10m deal to sign the 20-year-old Fulham centre-half Chris Smallingat the end of the season. Arsenal had made the first approach for a player who was at Maidstone United in the Isthmian League three years ago and who has made only four Premier League appearances. Smalling's move is subject to a medical – due today, according to Fulham's manager, Roy Hodgson – and personal terms and Arsenal will not give up. "As long as the player has not signed anywhere, it is not the end of it," said their manager, Arsène Wenger. Smalling is regarded by United as a successor to Nemanja Vidic, who is keen to leave Old Trafford.
If Ferdinand pleads not guilty to his charge, he could face City, with a hearing to be held on Thursday, but, if the FA considers the appeal to be "frivolous" and finds him guilty, the ban could be extended to a fourth game, at Aston Villa on 10 February. Ferdinand has until 6pm today to respond. If he accepts the charge, the three-match ban starts immediately.
The match against City has been preceded by Tevez calling Neville a "moron" and a "boot-licker" on Argentinian radio. "There isn't a problem with Carlos or any of the other players," Roberto Mancini, the City manager, said. "Everybody must stay calm and think only about the match. If we don't stay calm, we could have a problem. We must stay calm because it's important we think about the game, about tactics, about corners. We must keep our concentration. If you can stay calm, we will play better."
Mancini went on to quote "the fantastic Oasis", saying his message was "don't look back in anger". However, the City chief executive Garry Cook's comments that his employers will supersede United as England's biggest club and that it is a case of "when not if" they will reach Wembley have not helped to calm the situation.
"Sometimes people can get carried away," Ferguson said.
Zoran Tosic is close to agreeing a loan deal with FC Cologne after a miserable year at Old Trafford.