Former United skipper turned TV pundit Roy Keane described him as "too cocky" and high-profile blunders against Southampton and Sunderland are more rooted in his memory banks than the 14 shut-outs or his brilliant one-man show against Borussia Dortmund.
"It has been a tough season and unfortunately things have not always gone my way," he said. "I've held my hands up when I have made mistakes to the people I need to hold my hands up to. Sometimes I've let the team down. A schoolboy would have been disappointed with the one I that let in at Southampton, let alone myself. But you move on, as you have to.
"People sometimes criticise you unfairly and sometimes you get away with things and have to criticise yourself.
"I'm not concerned if people pick up on it as there are certain people I care about and others I am not particularly interested in."