Emirates club welcome Greek side.
Arsenal v Olympiakos Live Streaming
Per Mertesacker v Kevin Mirallas
With Arsenal short of experience, and bodies, at the back, Germany defender Mertesacker has needed to settle quickly and will have to keep a close eye on lively young Belgian forward Mirallas.
Mikel Arteta v Jean Makoun
Arteta impressed on his Champions League debut in Dortmund following his deadline-day move from Everton, and will compete with Cameroonian Makoun, who had a short spell at Aston Villa earlier this year.
Robin van Persie v Olof Mellberg
Arsenal captain Van Persie chalked up his 100th goal for the club against Bolton and will again be the main threat in attack, with former Villa stalwart Mellberg set to renew old acquaintances.