Diawara was only signed from Bologna in the summer of 2016 for €14.5m with the view of him being one for the future, but they now appear to have their eye on another promising Serie A midfielder.
According to TuttoMercatoWeb, the Neapolitan club have made the first bid for highly rated Sampdoria youngster Lucas Torreira and will use Diawara's sale to fund it.
Reports last month suggested that the Uruguayan midfielder was keen to stay at Sampdoria in order to continue his progression, but a hefty bid from I Partenopei could change his mind.
Napoli have sent first proposal after weeks of preliminary talks in the hope of beating out Inter who are hindered by financial fair play rulings and uncertainty over their Champions League place. RB Leipzig have also been registered with an interest.
The 22-year-old has a €25m release clause in his contract, which could prove tremendous value in the current market for an international with four goals and one assist to his name in Serie A this season.
Diawara on the other hand is aged just 20, and while he hasn't looked as confident this season, there is certainly potential there for any club willing to nurture it.
Maurizio Sarri seems to prefer using a defensive midfielder with more attacking capability whereas Diawara is more of an out-and-out midfield enforcer screening the centre backs, similar to Victor Wanyama.