Arsenal take on Olympiacos at the Emirates in their UEFA Champions League group-stage fixture on Tuesday night. The Gunners arrive after a dramatic late win at the weekend that kept pressure on league leaders Liverpool, while Olympiacos come into the tie top of the Greek Super League but frustrated by their failure to beat Pafos in their opener.
Mikel Arteta makes three defensive changes from the side that beat Newcastle, with Gabriel the only defender keeping his place. Up front, Bukayo Saka and Eberechi Eze drop out as Martin Odegaard and Gabriel Martinelli return in a more familiar 4-3-3 setup.
Olympiacos boss Diego Martínez sticks largely with the side that claimed victory last weekend, opting for consistency with just two tweaks — Gelson Martins and Santiago Hezze come in for Strefezza and Mouzakitis.
Here are the confirmed lineups: