Arsenal need to win with at least two goals difference and they can do it. As we remember, they’ve lost to Olympiacos three times in three away games in the last six years. But now it’s not the same and this unlucky practice can be broken. I think that Arsenal have all the resourses to play effective against the Greek side in an away game. They are to score at least two goals.
So I suggest to bet on Arsenal to win. Also you can bet on Arsenal to score over 1.5 goals, because they could also concede. The absence of Cazorla and Sanchez is a big blow for them, but I believe that the whole team performance can bring them victory.