Manchester United captain Gary Neville says he won't outstay his welcome at Old Trafford.

It's like a conveyor belt - a young one comes in and an old one falls off the end," he told barclayspremierleague.com . "I won't need telling twice when it's all over. 'Thanks very much, see you later.' It's the greatest strength of this club. You're out the day you stop making a contribution."