The former Villarreal man has been met with some tough challenges in Portugal following his summer move, but Serie A clubs could offer him a rescue plan as soon as January
The Spain international joined Benfica in the summer on a free transfer as a potential replacement for Fabio Coentrao, who left for Real Madrid, but he has found himself behind Emerson in the pecking order at the Estadio Da Luz.
Capdevila was also excluded from Benfica's squad for the Champions League group phase, leaving him and his agent less than impressed.
But Gaggioli is convinced Napoli would be a good option after reports suggested they are keen on landing him during the January transfer window.
"Can Capdevila leave for Napoli? Certainly, Napoli are a very important club and he would accept them with great pleasure," the agent told Radio Crc.
"I will meet Benfica soon and see if there is a chance he could leave [in January].
"I don't know if Napoli are really interested in him, but he is a player who does interest teams."
Capdevila, 33, has played just one of three games for the Portuguese side in the league.