Arsenal are looking to go on top of UEFA Champions League Group B with what should be a relatively straightforward home clash against Olympiacos. The Greeks had a relatively strong campaign last time out, but they've already lost to Schalke (in the Piraeus, no less), and they won't be expecting any points from their trip to London. The Gunners, meanwhile, will want to rebound from their weekend loss as quickly as possible.
Arsenal starting lineup (4-2-3-1): Vito Mannone, Kieran Gibbs, Thomas Vermaelen, Laurent Koscielny, Carl Jenkinson; Francis Coquelin, Mikel Arteta; Lukas Podolski, Santi Cazorla, Alex Oxlade-Chamberlain; Gervinho.
Olympiacos starting lineup (4-2-3-1): Balázs Megyeri; Jose Holebas, Pablo Contreras, Paulo Machado, Giannis Maniatis; David Fuster, Kostas Manolas; Leandro Greco, Drissa Diakite, Dimitrios Siovas; Kostas Mitroglou.