Wayne Rooney has broken his silence about the recent row he had with Sir Alex Ferguson, claiming the tension it caused affected his form.
Rooney was dropped and fined £160,000 by Ferguson for his lacklustre behaviour in training, following a night out on Boxing Day.
He then produced a lethargic performance when restored to the Manchester United starting XI as they went down 3-0 to Newcastle.
Rooney, 26, told Italian newspaper La Republica: "I was tense when I got back on the pitch and I think it showed."
When asked if he had challenged the fine of one week's wages, Rooney added: "Yes, but for reasons I can't say, I accepted it."
He continued: "You can't always agree. Football is made up of all kinds of conflict. In a dressing room, between players, between us and the manager, between us and loads of people who don't seem to matter. It's constant and harsh sometimes."
However, Rooney was also quick to insists that the row with Ferguson is firmly in the past. He said: "My manager, Sir Alex Ferguson, is the greatest present that life has given me."