The Gunners have enjoyed a fine 2015, but the home loss to the French side was a big disappointment.
The Gunners were widely expected to see of the French club comfortably in their last 16 tie, but a shocking 3-1 defeat at the Emirates saw them exit the competition, despite a 2-0 win away from home.
It was a poor display from Arsene Wenger’s men, who were criticised for not having taken their opponents seriously, while also being too gung-ho in their approach.
Now, Wenger has picked the defeat as his most disappointing moment of the season.
“When we lost against Monaco at home in the Champions League,” he said, when asked for his low point of the campaign.
“You felt that we were beaten by a team that are not better than us. It was a self inflicted defeat, because we were not psychologically at the level and did not have the patience to do the job well.”
It’s fair to say that the Champions League exit has been long forgotten given Arsenal’s fine form in 2015, in which their performances made them not only one of the Premier League’s in-form teams but one of the top sides in Europe as well.
Their subsequent FA Cup success will have helped to banish the bad memories as well, although it’s likely if you were to ask Arsenal fans their most disappointing moment they’d choose the home loss to Monaco as well.