Arsenal have been knocked out of the Europa League after losing to Olympiacos at the Emirates Stadium.The Gunners entered the second leg of the round of 32 meeting with a 1-0 advantage but the game was taken to extra-time after Pape Abou Cisse scored to give the Greek side the away goal that they required.Pierre-Emerick Aubameyang appeared to have booked Arsenal's place in the next round when he netted a sublime overhead kick in the 113th minute.The Gabon striker's goal made it 1-1 on the night and 2-1 on aggregate. But nobody was ready for what was to come next. 

In the 119th minute, Olympiacos' Georgios Masouras swung in a delicious ball that found its way to Youseff El Arabi inside Arsenal's area.

The forward slid the ball beyond Bernd Leno to stun the home crowd.

So the score was 2-2 on aggregate and Olympiacos suddenly had the advantage thanks to their two away goals.

Aubameyang had a glorious chance to turn the tie on its head once again in the third minute of stoppage time but the Arsenal strike fired an effort wide when he really should have hit the target.

And that was that. Arsenal couldn't score and they're out.

It's clear on this evidence that Mikel Arteta has a lot of work to do.

The Europa League represented a glorious opportunity for the Spaniard to win over supporters this this season - and it could have provided their ticket to the Champions League as well.

They have 11 games left in the season to secure an automatic spot in next season's Europa League, which will be crucial in their hopes of convincing Aubameyang and co. to stay in north London.