Nemanja Vidic has moved swiftly to deny reports of a fall-out with manager Sir Alex Ferguson and insists he is committed to Manchester United. Ferguson made the bizarre admission that he did not know why the Serbia defender pulled out of the shock FA Cup defeat by Leeds on Sunday and reports have suggested £7m signing Vidic, who has been linked with Barcelona and Real Madrid, wants out of Old Trafford. The 28-year-old former Spartak Moscow centre-back insists he was genuinely injured and has a "marvellous" understanding with Ferguson. "Everything surprised me a lot," he told Sportski zurnal. "Ferguson said that he didn't talk with the club doctor, but he didn't say that he doesn't believe in my injuries and that we are in a fight. "Everybody in the club knows that I have a marvellous understanding with my coach Ferguson." He added: "Moreover, I'm not unhappy at Old Trafford. I'm just injured and that is the end of the story."