Mikel Arteta has called on his Arsenal players to "keep fighting" for the remainder of the season after they were sensationally dumped out of the Europa League by Olympiakos.

The Gunners lost on away goals as Youssef El Arabi scored in the final minute of extra-time to give the Greek side a 2-1 victory at the Emirates Stadium.

It was enough for Olympiakos to progress as the tie ended 2-2, with the away goals rule sending last season's beaten finalists crashing out at the round of 32 stage.

"It hurts, big time," added Arteta.

"We had a lot of hope in this competition. It was a great way for us to be able to go to Europe and it is a very beautiful competition to try to win."

Olympiakos boss Pedro Martins believed his side got everything they deserved.

"I think against Arsenal we had two very difficult games against a bigger opponent," he said.

"But from the start of our European journey in the Champions League up until now we deserved to go through – perhaps we deserved more from our game against Spurs (in the Champions League group stage) and maybe we got what we deserved today."