Fiorentina director Daniele Pradè warned Adem Ljajic must “prove he wants to stay, otherwise the doors are open.”

His current deal expires in June 2014 and he has been linked with a move to Milan.

“We are working on Ljajic’s renewal,” director of sport Pradè told Sky Sport Italia.

“The main thing is that he wants to remain at Fiorentina and he has to prove it, otherwise the doors are open for everyone.

“We are a strong team and a strong club, so this forces the player to let us know what he wants to do.”

Fiorentina have already stated they will not allow Ljajic to follow in the footsteps of Riccardo Montolivo, who left as a free agent to join Milan last summer when his contract expired.