Fiorentina chief Daniele Prade cannot guarantee coach Vincenzo Montella will stay.

Montella has spoken of leaving the Viola this past week.

"Montella? We'll wait until the end of the season and then talk," Pradè told Rai Sport.

"We'll see what it is possible to do along with the Della Valle brothers. We will do what is best for Fiorentina."