Amauri's salary was a major reason why clubs opted against making a bid for the Juventus player this summer.
The Brazilian-born forward was made available for transfer, but he ended up staying in Turin after rejecting a deadline day switch to Marseille.
"His wages did penalise him on the transfer market," agent Giampiero Pocetta admitted to Radio Kiss Kiss.
"A lot of clubs came forward for him in the summer such as Fiorentina, Genoa, Palermo and Marseille.
"However, a lot of these contacts then disappeared."
The Italian international, who is contracted to the Old Lady until June 2012, is currently on around €4m a season net in wages.
"Napoli? There was never any concrete contact with them," Pocetta continued. "There was some timid interest at the start of July, but nothing ever came from it."