"Serie A" striker Dries Mertens, causing increasing interest from top European clubs.
Italian newspaper "Gazzetta dello Sport" reports that there is a simply ridiculous release clause in the contract of "Napoli" forward - 28 million euros, and this possibility can be used by other clubs.
D.Mertens has contributed significantly to the current leadership of Napoli in the Italian championship - scoring 9 goals and making 2 assists in 10 matches.
The Belgian's results were not much worse last year - 28 goals and 9 assists in 35 matches.
Merten's current contract with "Napoli" is valid until the summer of 2020.
