Arsenal were not given the easiest draw in the Champions League, after Arsene Wenger's side were thrown into Group F alongside Bayern Munich, Olympiacos and Dinamo Zagreb.
For the third time in the last four seasons Arsenal face Bayern, the German champions.
Bayern knocked the Gunners out in the Last 16 in both the 2013/14 and 2012/13 seasons.
Arsenal last played Olympiacos in the group stage of the 2012/13 campaign - when they lost 2-1 away, but won 3-1 at home.
The Gunners played Dinamo Zagreb in the play-off round in 2006, winning 3-0 away and 2-1 at home.
GROUP A: PSG, Real Madrid, Shakhtar Donetsk, Malmo
GROUP B: PSV Eindhoven, Manchester United, CSKA Moscow, Wolfsburg
GROUP C: Benfica, Atletico, Galatasaray, Astana
GROUP D: Juventus, Manchester City, Sevilla, Borussia Monchengladbach
GROUP E: Barcelona, Bayer Leverkusen, Roma, BATE Borisov
GROUP F: Bayern Munich, Arsenal, Olympiacos, Dinamo Zagreb
GROUP G: Chelsea, Porto, Dynamo Kiev, Maccabi Tel-Aviv
GROUP H: Zenit, Valencia, Lyon, Gent
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