Napoli have listed 20 players in their squad to face Young Boys in Bern on Thursday, with Miguel Britos and Walter Gargano absent.
The Vesuviani head out to Switzerland this midweek looking to maintain their 100 per cent start to their Europa League campaign.
It will be achieved without defender Britos, confirm the club, as he sustained a muscle strain against Inter on Sunday evening.
Gargano continues to work separately after undergoing surgery on a fractured cheekbone and is also not included, nor is Juan Zuniga.
Napoli squad to face Young Boys: Rafael, Andujar, Contini, Maggio, Mesto, Albiol, Henrique, Koulibaly, Ghoulam, David Lopez, Inler, Jorginho, De Guzman, Callejon, Insigne, Hamsik, Mertens, Michu, Duvan, Higuain