The Slovakian has been impressing at Euro 2016 this summer and he scored a fine goal against Russia last week.
The midfielder’s agent, Juraj Venglos, has now revealed that clubs are interested in his client and that he could leave this summer.
However, according to Radio Crc, Napoli have no desire to part with Hamsik and will not listen to any offers.
The 28-year-old has been with the club since 2007 and they see him as an integral part of their future.
Chelsea and Manchester United are now weighing up whether to persevere anyway, while Juventus are considering a renewed approach too.