The Gunners have been on the again foot for a lot of the primary half and appeared nervous within the opening levels against a vibrant house aspect.
The hosts went shut by Andre Silva and Filip Kostic however Arsenal slowly made their means into the sport and examined Kevin Trapp by Emile Smith-Rowe and Aubameyang.
But the opener got here by Willock, who minimize inside following Saka’s cross and noticed his effort into the highest nook deflect over Trapp and into the web within the 39th minute..
The midfielder was one of seven adjustments for Arsenal and he went near doubling Arsenal’s lead halfway by the second half however noticed his left-footed effort nicely saved.
Arsenal gave up fewer possibilities after the break however their again 4 of David Luiz, Calum Chambers, Shkodran Mustafi and Sead Kolasinac appeared removed from comfy.
Aubameyang squandered a superb probability to seal the win following a superb cross from Chambers and the Gabon worldwide’s frustration continued when he by some means lacking an open objective seven minutes from time..
Frankfurt have been pushing ahead for an equaliser however their activity was made much more troublesome when Dominik Kohr was despatched off for a second bookable offence.
Kohr’s dismissal deflated the house aspect and Aubameyang lastly obtained on the scoresheet when he beat the offside entice and transformed Saka’s cross to spherical off the victory.