Olympiakos gave Arsenal a nervous night winning 1-0 in London on Thursday, but that was not enough for the Greek champion that went out of the Europa League losing 3-2 on aggregate.
After a 3-1 victory in Piraeus a week earlier and reaching halftime unscathed in the return, Arsenal looked comfortable.
But when Youssef El-Arabi’s deflected shot left Bernd Leno wrong-footed early in the second half it gave the visitors hope and increased the tension among the home ranks.
Arsenal wasted several late chances to ease the jitters with captain Pierre-Emerick Aubameyang, restored to the starting line-up being left out of Sunday’s north London derby for disciplinary reasons, guilty of a poor miss.
Olympiakos had Ousseynou Ba sent off late on and Arsenal was spared any late dramas as it avenged last season’s elimination by the Greeks to take its place in Friday’s last-eight draw.
“After we conceded, we got better and got more control but we put ourselves in a difficult position,” Arsenal manager Mikel Arteta said. “We gave them some belief, which you cannot give to the opponent. We’ll get better.”
Olympiakos will take pride from a third successive away win against Arsenal, but the damage was done in the first leg when they conceded two late goals having equalized.
Arsenal was comfortable until a loose ball by Dani Ceballos led to El-Arabi’s goal which gave the visitors hope.
As Olympiakos pushed forward it allowed gaps at the back and Arsenal should have capitalized with substitute Martin Odegaard firing over and Nicolas Pepe having a goalbound effort deflected away while Aubameyang could have had a hat-trick.
“It’s true that we missed a lot of chances, I think we created enough chances to win the game, but still – we were nowhere near the level we should be at,” Arteta said.