The 27-year-old could be nearing a move to Everton.
Luring the former Benfica man to Goodison Park would be a major coup for the Merseysiders, and the first big signing of what might be an exciting new era at the club under owner Farhad Moshiri.
Manager Ronald Koeman, who left Southampton for Everton last month, reportedly has a warchest of £100 million to use this summer and The Mirror reported that Witsel could cost around £28.5 million.
One thing Napoli have over Koeman's side is the promise of Champions League football next season, but even without entry to the prestigious competition, Francesco Marseglia, a mediator for Witsel, says he would join the Italian side one thousand times before the Premier League side if it was him.
“Everton seem more likely at the moment," he told Radio CRC, quoted by Inside Futbol.
"If you see from the economic situation it is the right move, but for his career, I would choose Napoli a thousand times [over Everton], even putting aside Champions League football.
“Everton do not seem like a big team, and if he was my son, I would no doubt advise him to join Napoli."
Revealing that Witsel is nearer to Everton than Napoli is sure to delight supporters, but Marseglia's other sentiments are unlikely to go down well on the blue half of Merseyside.
The truth is that these are exciting times at the club and plenty of players would love to be a part of it - even at the expense of Champions League football in the short term.