Arsenal and Chelsea have been told Fiorentina forward Stevan Jovetic will cost €30million.
Reports last month had suggested Chelsea were preparing to launch a bid in the region of €22m for Jovetic as they look to bolster their attacking options for next season.
Napoli are also keen on the 22-year-old, who has previously been linked with the likes of Manchester City and Manchester United, while weekend reports suggested Arsenal were also showing interest as manager Arsene Wenger looks at bringing in replacements for Robin van Persie.
But clubs showing interest in the Montenegro international have been told they will have to pay at least €30million if they are to convince Fiorentina to part company with one of their prize assets.
The club's sporting director Daniele Prade told SportItalia: "Since the start of the season we have said that we are not selling Jovetic.
"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 has the potential to become a player like Francesco Totti."
Jovetic only recently signed a new five-year deal with Fiorentina, but reports in Italy earlier this year claimed the new long-term contract was only agreed so the club could obtain a higher transfer fee.
The player had earlier this year been quoted as saying he had "been looking out for a chance to play in the Premier League."