The Gunners must win away from home if they want to reach the semi-finals
Saudi Arabia's Al Hilal saw their record run of 34 successive victories end on Wednesday at the hands of UAE's Al Ain in the Asian Champions League.Al Hilal, the four-time Asian champions, last failed to win a game in September last year when they drew a Saudi Pro League match.
Arsenal need a result in Germany after a 2-2 first-leg draw