All the latest news and gossip from the past 24 hours at The Emirates.
The Polish goalkeeper was discussing the game, in which Arsenal led 3-0, saying it was 'stupid' to have thrown away the result.
He said to Polish media:
"I would not call bad luck. Rather, our own stupidity. You can have bad luck when you lose a one-goal lead. You can have very bad luck losing two-goal lead, but to lose three goals? It’s stupidity and lack of experience."
It was reported this morning that Joel Campbell is looking to make a move away from Arsenal in the winter, in the hunt for first team football.
The Costa Rican forward was in top form for Olympiakos in Greece last season and also performed wonders at the World Cup during Costa Rica's dream run to the quarter finals.
But he is struggling for first-team football at The Emirates, so it has been suggested that he could make a move away from Arsenal, at least temporarily.
But he has told reporters in Greece that he will be staying at the club this summer: