Prade's quotes come after the Florence-based club rejected an offer of €13m [£10.2m] plus Alessandro Matri and Michele Pazienza from the Bianconeri for the Montenegro international, who has been linked with a new challenge in recent weeks amid reported interest from Chelsea.
The Fiorentina director stated that Jovetic will not be sold on the cheap and insisted that his side do not want any players to be thrown into the deal as makeweights.
"The club's owners have told me that Jovetic is not on the market, but that there is an agreement which says he could leave if an offer worth €30m, with no players included in it, is made," Prade told reporters.
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Such comments appear to have put Juve out of the race for Jovetic, with general director Giuseppe Marotta admitting that his side will not meet the 22-year-old's price tag.
"Do Juve have €30m for Jovetic? That is a big request, but everyone is free to set the price they want," Marotta noted.
"That fee is difficult and for now we will not talk about it.
"Robin van Persie a dream of the fans? You need to have dreams and ambitions, but you also need to deal with the reality of the facts.
"We know what we must do, and this is the most important thing."