Last season and the 2 seasons before that they have improved a lot and those were some of their best seasons under Arteta. Their squad this season is still the same as last season. They just need to maintain consistency in every game. Arsenal's squad last season was very worthy of being champions and they deserved it. Unfortunately City were more consistent than them and managed to get a lot of points in crucial games.
Arsenal players and Arteta had been on a journey to leadership with great dedication for 2 seasons, but Arsenal could not win the championship due to their inexperience and some wrong decisions or lack of squad depth. The squad has learned a lot in two years and they are in incredible harmony now.
Even though Aston Villa will be a difficult opponent in the match to be held this weekend, Arteta will overcome this match, I think they will get the three points if they make the rotations as fast as they want, this will happen.