Napoli president Aurelio de Laurentiis insists the club will not sell their stars.
De Laurentiis is aware of the speculation swirling around his Champions League qualifiers.
"I tell the fans to stay calm," he said. "When a market opens everyone wants to buy, but 95 per cent of it is just talk. Napoli fans are intelligent and shouldn't be taken for a ride by the media.
"If someone wants one of our players then they have to come and ask me. There is no need for chatter and no need to shout.
"If someone wants to buy one of my players, who no longer shows a desire to wear these magnificent Azzurri colours, then someone is going to have to put their hand in their pocket."
De Laurentiis also confirmed that he's only been asked for Hamsik by Inter in the past and he quickly ended their interest.
"When [Inter President Massimo] Moratti called me I told him that I would never sell Hamsik. [Milan Vice-President Adriano] Galliani has asked me nothing.
"Napoli are not a supermarket. Perhaps you can describe us as a jewellery store, but people are scared by our prices..."