They are seriously in need of players and that is one of the things that is affecting there players that they are unable to perform very well, they need fresh blood and instead of arteta going for attackers his busy defenders having defenders is good but balancing everything is very okay and when the club is balanced in all positions then the impact will be felt.
Things in Arsenal are good and they have very good players except their strikers. They don't have good strikers as Gabriel Jesus and Kai Harvetz are not good strikers. It affects Arsenal attacking performances and in this season when Odegaard performs worse than two previous seasons, scores less goals for them, Arsenal have more problems in finding goals.
They will benefit from adding players but it is not even about young players because sometimes this young players don't have any experience and already people have believed in them, it is better they go for a player that is experienced and will give them exactly what they want, from last two season them became Manchester City rival and I was already thinking that this season we are not performing well arsenal will be the one to take advantage of this whole situation not know Liverpool was the next in line and arsenal really disappointed a lot.
Arsenal will have to balance between finding a new striker and maybe players at other positions too, and their club salary ceiling as well as avoid overspending that is proven as biggest reason of financial issues and collapses in many clubs.
They can spend big money for buying one or some star players but they can perform good or bad for Arsenal and if after some seasons, no better performances of the team, no titles, these expensive transfers will be failures. By spending too much money for transfer costs and player salary, Arsenal finance will be worse than now.