Crystal Palace opted to bolster their squad with talented youth stars last summer, with the likes of Michael Olise and Marc Guehi joining the ranks.
The 35-year-old is Napoli’s all-time record goalscorer (148 goals) but looks set to end his nine-year spell at the club once his contract expires this month.
Mertens has been exceptional for club and country during his career, racking up 104 appearance for Belgium since 2011.
The forward has proven to be versatile in Naples - playing as a false nine, a no.10 or on either flank - which could prove to be a very tempting asset for Patrick Vieira’s side.
Palace are currently relying on Jean-Philippe Mateta, Christian Benteke and Jordan Ayew up front and may believe that Mertens could improve an attack with a combined 12 Premier League goals last season.
While the Eagles could tempt him into living in London, it is thought that the Belgian is making around £137,000 per week at Napoli - slightly more than Palace’s highest earner, Wilfried Zaha.