The central defender has been attracting interest from the Italian side for some time, with Rafael Benitez – the man who brought the Dane to Anfield – a big admirer of his abilities.
Despite the Reds having used their vice-captain sparingly this term, they have always remained adamant that he will not be sold.
However, with injuries having ravaged Brendan Rodgers’ midfield, he is said to be open to a swap deal if Inler is involved.
The Swiss enforcer has long been thought of as one of Serie A’s finest talents, and has been a key part of the Naples side’s first-team as they have risen from a midtable outfit to genuine title challengers over the course of the past few seasons.
Even though he is now 29, Rodgers sees him as a top quality addition, and the sort of player who may be able to keep the Merseysiders’ push for a top four finish on track.
Agger could be sacrificed, with Liverpool possessing a wealth of centre-backs, including Kolo Toure, Mamadou Sakho, Martin Skrtel, Martin Kelly and Tiago Ilori – although the latter is away from the club on loan.