The club supremo rules out an approach for the highly-rated Slovakian international this summer during a speech in the city of Naples
The 23-year-old has been linked with the Italian champions in recent weeks and he himself admitted that he will think about joining them if an offer were to be made.
"If an offer arrived then I would have to talk to Napoli first,” said Hamsik. “I would like to try playing for a club that regularly challenges for the Scudetto and Champions League."
On Thursday Milan CEO Adriano Galliani gave another hint about landing Hamsik when he identified him as one of the left-sided midfielders they are interested in.
However, club patron Berlusconi has now said that they will not approach Napoli for the highly-rated player.
During a speech in Naples to promote one of the candidates for the mayor elections to be held on Sunday, the Italian prime minister stated: "We will not buy Hamsik. Milan don't touch the symbol-players of other teams.”
Hamsik had a productive 2010-11 campaign for Napoli, scoring 11 goals and providing seven assists in 37 Serie A appearances, and helping Walter Mazzarri’s side to automatic qualification for next season’s Champions League.