Lucas Silva is unlikely to join Real Madrid in January with the Spanish giants not planning to make any transfers.
The Uruguayan striker has been in fine form this season, scoring 27 goals for the Serie A side, making him among City's top targets for the summer.
But De Laurentiis insists the 26-year-old will not be leaving Napoli unless the club receives a huge bid for the player.
"We included a very high buy-out clause in his contract as we want him to stay," said De Laurentiis, quoted in The Sun.
"But if some nutter is willing to pay £60m, which would mean a net fee of £54m for Napoli, we are ready to listen to the offer.
"Let it be clear that the final decision lies with Edinson. He knows he's respected here and that the people love him."