Arsenal midfielder Granit Xhaka was left furious with his defence after Thursday night's draw with Slavia Prague.
The Gunners thought they were heading for a quarter-final first-leg win over Slavia Prague at the Emirates Stadium after Nicolas Pepe scored as late as the 86th minute.
But Mikel Arteta's men blew it in stoppage time when Tomas Holes scored three minutes into added time to secure a draw for the Czech side and a potentially pivotal away goal.
The late goal is another bitter blow for the Gunners after the disastrous showing in the 3-0 defeat to Liverpool in the Premier League on the weekend.
And that is, perhaps, why tensions were so high, particularly in the case of midfielder Xhaka, who lost his cool after seeing Slavia find their equaliser.
As pointed out by Goal's Charles Watts, Xhaka was furious with his teammates after the full-time whistle, screaming "Just clear the f*****g ball away man."
That might just have captured the attitude of every Arsenal fan at home, with the Gunners' fanbase all too accustomed to seeing their side concede sloppy goals this season.
It's why Arsenal find themselves performing so poorly in the league and why there is now so much importance on the Europa League heading into the back-end of the season.
The defeat to Liverpool all but ended Arsenal's chances of qualifying for Europe through the Premier League, and it means the Europa League could be their only chances of ensuring European football for next season.
Should Arsenal find a way to win the competition, which still features the likes of Manchester United, Villarreal, Ajax and Roma, they would qualify for next season's Champions League.
