Arsenal have been handed a competitive group in their Europa League draw today.
Both English sides face difficult tasks to advance to the knockout stages when the group phase begins on September 14.
It is the first time in 20 years that Arsenal have started a European campaign in the Europa League.
Europa League group stage:
Group A: Villarreal, Maccabi Tel Aviv, Astana, Slavia Prague
Group B: Dynamo Kiev, Young Boys, Partizan Belgrade, KF Skanderbeu
Group F: Viktoria Plzen, FCSB, Hapeol Beer Sheva, Lugano
Group G: FC Copenhagen, Lokomotiv Moscow, Sheriff, Zlin
Group I: FC Salzburg, Marseille, Victoria, Konyaspor
Group J: Athletic Bilbao, Hertha Berlin, Zorya, Ostersund