The same source has revealed it would take €5.2 million to meet the player’s buy-out clause, although the Azzurri are hoping to lower the asking price.
Nevertheless, it is believed they will not miss out on the opportunity to sign such a quality goalkeeper and will eventually match the clause if needed.
The player’s £5 million yearly wage and interest from abroad could also prove to be a problem, but Napoli officials believe Reina will eventually accept an offer from Stadio San Paolo having fallen in love with the club and fans.
The 31-year-old has featured in 24 Serie A fixtures since arriving on loan from Liverpool, while playing in five Champions League matches and four Europa League games.
With Victor Valdes picking up a season-ending injury and Iker Casillas struggling for playing time at club level, Reina could even establish himself as a first choice for Spain at the forthcoming World Cup.