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.
The team that Arsenal will be facing tomorrow is the same team that contributed to them not winning the premier league last season. Unai Emery has maintained a good result against Arsenal, and tomorrow's game is a chance for Arsenal to get their revenge against Aston Villa for last season. Arsenal can win that game, Arteta have good options to replace Zinchenko who is the weakest link for Arsenal. If Arteta starts either Timber or Caliofori instead, they can be good. An early goal will make Arsenal more comfortable. Tough fixtures for Arsenal, now is not the time to start dropping points.