With Champions League qualification secure, Napoli want to focus on planning for the coming season. Possible signings, such as Fornals or Lozano and contract renewals.
The Italian club has work ahead though, although it seems that the renovation of Callejón is looking likely, as is that of Ospina. Mertens, however, remains far away from a new deal.
The Belgian winger will be at Napoli next season (2019-20), but it may be the last. Mertens contract ends in June 2020 and at the moment there is no agreement keeping him in Naples past then.
Some clubs are now looking to take advantage of these issues between the Belgian and Napoli. In addition, in recent months there has also been speculation that Mertens might end up in China, where he would join Napoli legend, Marek Hamsik.