For the second match running, Arsenal were forced to come from two goals down to pick a result, as they drew 2-2 away to Standard Liege in their last Europa League group match on Thursday night.
Freddie Ljungberg's boys were losing 2-0 with 11 minutes to go, but a late onslaught led by Bukayo Saka ensured they left Belgium with a point, which guaranteed them top spot in the group.
Drab first half
The Gunners controlled the first half, but fell to two second-half goals from Samuel Bastien and Selim Amallah, before Alexandre Lacazette and Saka pulled them level.
Arsenal were the first to get a real chance of opening the scores through Smith Rowe on the 14th minute, but his shot was deflected for a corner.
Both teams traded blows with nothing much going forward, until the 45th minute when Bukayo Saka wasted a glorious chance to put the Gunners in front.
The teenager created himself some space inside the penalty box and unleashed a decent strike towards the left side of the goal, but Arnaud Bodart made an astonishing save to thwart him as the match went into the break tied 0-0.
Improved second half
The game, however, sprung to life in the second half as both teams scored two goals each, with the hosts the first to get off the blocks.
Samuel Bastien tried his luck from the edge of the box two minutes after the restart, and his shot took a huge deflection and went past the stranded Emiliano Martinez to alter the scoreline.
With 20 minutes to go, the hosts doubled their lead with yet another deflected shot, this time Selim Amallah with the goal.
Arsenal went all out in search of a goal and were rewarded with 10 minutes to go as Bukayo Saka found Alexandre Lacazette to head home from close range and halve the scores.
A minute later Saka leveled matters with a fine strike from the edge of the box into the right corner for a 2-2 draw.