Jovetic has been strongly linked with a move with reports in Italy claiming that Chelsea, Arsenal, Liverpool and Juventus are all in the race to acquire the Montenegro international.
Fiorentina are, however, reluctant to sell the 22-year-old, who is under contract with the Tuscan outfit until June 2016.
"Since the start of the season we have said that we are not selling Jovetic," Prade said. "There is, however, an agreement with the player that (should we get an offer) above a certain figure, we will sit down and evaluate the offer.
"So far we have not received an offer for the player.
"He is a top player and we will only consider offers above 30million euros.
"He (Jovetic) has the potential to become a player like (Roma captain) Francesco Totti."
Jovetic, who joined Fiorentina from Partizan in 2008, scored 14 league goals in 27 league appearances for the Viola last season.