Manchester City boss Manuel Pellegrini cannot guarantee keeping hold of Sergio Aguero.
The Argentine striker has stated in recent days he hopes for City to be his "last club in Europe".
But speculation persists over interest from Real Madrid and Pellegrini says: "Sergio is very happy here and has been in Europe for six years.
"I do not think he will (leave), but I do not know the future.
"Sergio currently does not want to leave, and we do not want to sell."
