Arsenal have an unhealthy habit of making life unnecessarily difficult for themselves. This was no different.
Through they eventually went to the Europa League quarter finals, gaining revenge against the side who knocked them out of the competition last season.
But it was job done only just and after a genuine scare, losing once again at home to Olympiacos after conceding a self-inflicted goal and passing up a string of chances, including a hat-trick of misses from returning captain Pierre-Emerick Aubameyang.
Youssef El-Arabi scored the only goal of the game but Arsenal still progress to the quarters
The Olympiacos forward was the hero last season but this time, Arsenal emerged victorious
Olympiacos defender Ousseynou Ba was sent-off for two bookings in the space of 10 seconds
Despite losing on the night, Mikel Arteta's team progress to Friday's quarter-final draw
MATCH FACTS AND RATINGS
ARSENAL (4-2-3-1): Leno 6; Bellerin 7 (Chambers 81, 6), Luiz 6, Gabriel 6, Tierney 7; Elneny 6.