By 1970's Gooner
It has been argued that Aouar is the missing link in Arteta's Arsenal revolution. He is the player that will provide the creative spark in the middle of the park that is apparently missing. He has also been touted as the equivalent of what K.D. Bruyne is to Man City.
However if he does eventually come to Arsenal and Arteta gives him a place in the starting 11 then this has implications primarily for Ceballos who is the more creative player currently in the squad.
Furthermore Aouar does not really have a defensive element in his armoury. He is more like an Eden Hazard in built and technical skills which should excite us gooners no end.
However this implies that Arteta can either keep the same formation of 3 4 3 and have one pure holding player in front of the defence with Aouar given a free license to roam or he may have to change formation in order to accommodate him and keep some solidity.
This formation will probably be a 4 2 3 1 where he will play as a number 10 when Arsenal are on the offensive. This will allow for retaining the two more defensive midfielders in front of the defence and add a more offensive nature in the team.
Bellerin Luiz Gabriel Tierney
Saka Aouar Aubameyang
(I personally think that Willian needs to be dropped as he has been awful in the last two games).
It does however mean that there will be less cover in defence with a flat four. This can be compensated by one of the defensive midfielders dropping in the back four when we are defending and by at least one of the full backs staying behind when we are attacking.