It was very impressive to see Mikel Arteta getting very active in the current transfer window and signing many highly talented players to Arsenal. I think Mikel Arteta made a very good choice in signing Kai Havertz, I am eager to see Kai Havertz blending into the team and creating more goal scoring opportunity for his Arsenal teammates in the new upcoming season.
Mikel Arteta definitely doesn't want to make the same mistake next season. We know Arsenal last season surprised all Premier League lovers. Because Arteta's team managed to top the standings for quite a long time throughout the season. even though at the end of the season Manchester City managed to overtake and made Arsenal have to settle for only being ranked 2nd. but that was already good compared to previous seasons. the mistake I meant last season was that Arsenal did not have enough good backup players when some of their core players were injured which made Arsenal suffer several defeats or were held to several draws by a team they should have been able to beat at that time. And the mistake was that at that time Arsenal did not have proper preparation to deal with a situation when several of their core players were injured. So this time it seems that Arteta does not want this to happen again. so he has to be more aggressive in the transfer market this time. to build a more mature squad. which makes him have to have many options if a core player is injured. because this time Arsenal will not only focus on the Premier League but Arteta must also ensure Arsenal also perform well in the Champions League.
Besides the point of not having extra players for the core positions in Arteta's team, the fact we miss is that Arteta and the whole gunners management weren't expecting the team to be on top.
They probably felt it was going to be like the previous seasons where they had to manage to stay cool on the top 5 spot.
Last season proved to them how porous the plan of managing to stay afloat can almost bring success, but resources, signing of new quality players and a general upgrade needs to be emphasized, if the team intends to replicate last performance and possibly lift the trophy.