Former scout Carlo Iacomuzzi, who has worked for the Blues, claims they plan to make a move for Hamsik.
He told Radio Kiss Kiss Napoli: “I watched Hamsik many times on behalf of Chelsea and I know that scouts have come to see him this year to see how he is getting on.
“How much is he worth? This depends on the requests. But I would say that €30m is not enough for him because he can improve and has potential.
“He can improve playing in a team of champions which has players like Didier Drogba, Michael Ballack and Frank Lampard.
“Abramovich has a feeling for the deal and I am convinced Chelsea will make an official offer for Hamsik this year.”