Arteta wouldn’t want to repeat same Mistakes he made last time Against Olympiakos in the uel where his side narrowly crashed out of the competition.
Arsenal are currently unbeaten in the uefa Europa League with just one draw and the rest wins which make them a strong favorite in winning the competition.
Last time Arteta crashed out of the competition he didn’t have what one could comfortably term and attacking creative Midfielder then, but currently he has two young brilliant attacking Midfielders in his squad (Emile Smith-Rowe and Martin Odegaard).
Using both attacking Midfielders has turned out to be an headache for Arteta as he pushed either one of them wide on the wings, which most times they perform very low on that position and his 3-4-3 formation requires less ball holding in the middle of the Pitch where both players dominate in.
Arteta naturally prefers his players attacking from the wings, so he want to consider a 3-5-2 formation with Odegaard playing just behind two attackers and Smith Rowe playing as a luxury wingback that would occasionally drop to Midfield with Thomas Partey closing up opened space from the left.
Alternatively Arteta might decide to use his 3-4-3 formation where he would start both Martin Odegaard as a winger (left or right) with him moving freely in the middle of the pitch as him leaving out Odegaard means he would be reducing his chances to get a win as Odegaard is super creative when on the ball.
David Luiz best attribute is Ariel duels, he would be very important in blocking those long Crosses Olympiakos would want to through into the box, so him playing at the middle is vital to Arteta grabbing a win from this encounter.