La Gazzetta dello Sport reports that Benitez is keen to strengthen at the back in January and is keen to bring Azpilicueta to Italy.
Azpilicueta impressed Benitez during the Spaniards six months in charge at Stamford Bridge.
The 24-year-old joined Chelsea from French side Marseille in a £7million deal in August 2012.
Azpilicueta is keen on regular first team football in order to secure himself a place in the Spanish squad for the World Cup and could be interested in a move to Napoli.
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Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.
Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.