Europa League: surprise exclusion, Milik and Aubameyang both start from the bench?
Arsenal (3-4-2-1): Cech; Papastathopoulos, Koscienly, Mustafi; Maitland-Niles, Xhaka, Torreira, Kolasinac; Ramsey, Iwobi, Lacazette.
Napoli (4-4-2): Meret; Hysaj, Maksimovic, Koulibaly, Mario Rui; Callejon, Allan, Fabian Ruiz, Zielinski; Insigne, Mertens.