Manchester City boss Pep Guardiola fears Aleksandar Kolarov could be tempted away.
Guardiola is convinced the 30-year-old will have a number of suitors from Europe's biggest clubs when he considers his next move.
“We're in September so we have time," he said.
“What I want is that Kola is happy here when he plays at that level.
“Of course we are going to be interested to speak to him and all the clubs in the world."