AC Milan have not ruled out selling striker Mario Balotelli amid rumours he could return to the Premier League.
"We will see what happens," Milan vice-president Barbara Berlusconi said in a statement: "But I don't believe that someone can be irreplaceable."
The Italy international played almost three seasons at Manchester City before joining Milan for £19m in January 2013.
Balotelli scored 14 goals in 30 league appearances for Milan last season but the club finished eighth in Serie A and will not play in Europe next term.
While at City the former Inter Milan striker won the FA Cup in 2011 and Premier League in 2012 before leaving England to return to Italy.
Balotelli, who has also been linked with Napoli, is currently on World Cup duty with the Azzurri and scored the winner in the 2-1 victory against England in Group D.