However, he wants to stay at Napoli
Napoli forward Dries Mertens says Chelsea have spoken to his agent but insists he has no intention of leaving his current club this summer.
The Belgian attacking midfielder has also been linked with Manchester United.
He signed a new three-year contract at Napoli last week after scoring 28 goals in Serie A this season.
Speaking to Sky Sports News, Mertens confirmed that Chelsea along with some other clubs had been in touch regarding a potential move.
"Yes there was interest, and from other clubs also, but in my head there was never an intention to change clubs," he said.
"This season was really good. I am going to try and be even better next year.
"Yes there is a buyout clause. But I'm happy at Napoli and I want to stay. I really like Italy. I am good there and they treat me good."
The 30 year old has been at Napoli since 2013 and last season, when he scored 34 goals in all competitions and added 15 assists, was by the far the highest scoring season of his career.
Mertens managed two hat-tricks in Serie A as well as a four goal haul against Torino in a 5-3 win back in December.