The 24-year-old has been linked with a host of European sides following his impressive form this season, but the Slovakian has no plans to depart the Italian club in the summer.
"I love this shirt. I have always said this. I have signed a five-year contract and I am happy here. I believe in this project and I want to continue playing here," Hamsik told Sky Sport Italia.
Napoli host Novara in Serie A on Saturday.