Roy Keane left Manchester United primarily because of tensions that peaked after he appealed a £5,000 fine imposed on him following a controversial interview where he harshly criticized teammates for lack of effort. This appeal reportedly was the tipping point for then-manager Sir Alex Ferguson. Additionally, Keane's outspoken nature and a training ground bust-up with Ferguson and assistant Carlos Queiroz contributed to the breakdown of relations. Keane's critical comments on teammates and disagreements over club matters, which led to a decision by Ferguson that enough was enough, ultimately resulted in Keane's departure by mutual consent in November 2005 during an injury absence. Keane expressed that while he was prepared to leave, the manner of departure was unpleasant. His relationship with Ferguson remained strained, with Keane leaving at age 34 on an expiring contract after 12 years at the club.