Arsenal looked to be home and hosed after their 3-0 victory over Ostersunds in Sweden, but two goals in 69 seconds in the second leg at the Emirates threatened to turn the tie on its head.
To the casual observer, Thursday night's second leg was a mere formality, however the game quickly threatened to turn into a nightmare for Arsenal.
With 22 minutes gone, Hosam Aiesh was sent racing clear down the left and he duly fired across David Ospina and into the bottom corner with the aid of a slight deflection off Calum Chambers.
Aiesh (22):