The 26-year-old has spent six years in dutch football establishing a reputation as a tricky winger and now clubs around Europe have set their eyes on him.
He feels, at this age, the time is right for him to take the step up for a new challenge in a major league and the fact that Napoli is qualified for Champions League 2013-14 makes it more attractive for him to go there.
Mertens reprensative believes a switch to italy will be completed in next week, with everything having been agreed between clubs and player.
According to Sky sports, Soren Lerby told Radio Cre: “Mertens wants to enjoy a great season and take an important step in his career at a club with great history like Napoli.”