Former Fiorentina star Carlos Dunga says they must keep hold of Stevan Jovetic.

Jovetic is wanted by some of Europe's biggest clubs.

"A player like Jovetic would certainly be important," Dunga told

"But if I put myself in the shoes of Fiorentina, I think that a team who wants to compete can't sell its best player, because we are talking about a player of great quality."