Roberto Mancini has told Carlos Tevez he should leave Manchester City if he is not happy at the club.
Tevez's future has been in doubt ever since he handed in a transfer request last December, a demand which he later withdrew.
And although Mancini admits the Argentina international is a key player, he feels it is important players are happy at Eastlands as City look to next season's UEFA Champions League.
"He's got a five-year contract but I always say that a player should stay here because he believes in the project and he's happy to stay at the club,"