Napoli will have to cope without Allan against Udinese, but Dries Mertens has recovered from illness in time to be included in this weekend's squad.
Allan, who has been suffering from two fractured ribs, joins Arkadiusz Milik, Faouzi Ghoulam and Kevin Malcuit on the sidelines as Napoli try to bounce back from a winless run of eight games.
The midfielder has also reportedly been targeted by Paris Saint-Germain for a January transfer, but Mertens travels to Dacia Arena after managing to shake off a bout of flu.
The Partenopei’s players are currently on a training retreat, as per Carlo Ancelotti’s orders.
They will be kept together until the decisive Champions League match against Genk next week.
Napoli squad to face Udinese: Meret, Ospina, Karnezis; Mario Rui, Luperto, Maksimovic, Di Lorenzo, Hysaj, Koulibaly, Manolas; Fabian, Elmas, Zielinski, Gaetano; Callejon, Llorente, Lozano, Mertens, Insigne, Amin, Leandrinho
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