There have been claims in Italy that Chelsea are preparing to bid £20million for the Montenegro international.
"For the time being, Jovetic is our player," Prade told Italian radio station Radio Uno.
"Chelsea have never made an official proposal and I know their (Chelsea's) club executives very well as I lived in England for a year.
"We want to build our team around him."
Jovetic has been linked with a move away from Florence in the past year. The 22-year-old is under contract with the Tuscan outfit until June 2016.
Jovetic, who joined Fiorentina from Partizan in 2008, scored 14 league goals in 27 league appearances for the Serie A club in the 2011-12 season.