"First of all, he needs to be available, and last year he missed so many games through injuries," Arteta said.

Napoli manager Antonio Conte has rallied his injury-hit side ahead of their must-win UEFA Champions League match against Chelsea, urging his players to continue defying expectations. Napoli will be without several key players, including Kevin De Bruyne, Vanja Milinkovic-Savic, Andre-Frank Anguissa and Matteo Politano