"The Manchester players protested a lot," Ancelotti said afterwards. "I don't know why. I don't like this. At the end of a very difficult match, all the players worked very hard - and sometimes it can happen."
Related ArticlesRooney and Ferguson under FA scrutinyThe Daily Bung: at least John Terry's appreciated at work.Chelsea 1 Manchester United 0Alan Hansen: Do not write United offUnited need to unleash Michael OwenJohn Terry shows character againFerguson's complaints began when a decision went against Darren Fletcher. With the free-kick ultimately leading to the goal, the Scot, who last month was reprimanded by the FA for his comments about Alan Wiley, branded Atkinson's positioning to have made such a decision as "ridiculous".
Pleased with his side's performance and not willing to comment much further on the complaints being made towards the match officials, Ancelotti added: "We beat a very good team, we beat the best opponent (in the league) and we are five points clear, but we know very well that the season is long. We have to maintain this atmosphere and maintain this gap."
When asked about Chelsea's title prospects, he said: "Until now we have done very well, but you have to count at the end of the season. We are in a good position in the Premiership and Champions League.
"[But] It is not just between Chelsea and Manchester United for the title either. If Arsenal keep on winning, they will obviously do very well too."
Meanwhile, Terry said he was claiming the goal - his first ever against United at home or away - despite replays showing that the final touch actually came from Nicolas Anelka.
"I got a touch on it but I think maybe Nico (Anelka) got the second touch - but I'm still claiming it," he said. "I was watching the stats before the game and I've never scored against them home and away. But Nico's been brilliant today, so he deserves it."