Well, since several seasons ago, we actually all saw quite a lot of potential in Arsenal. Arsenal have basically found a good composition in their squad. It's just that what Arsenal lacks is their consistency throughout the season. And yes, in terms of second tier players, Arsenal really has to prepare the best, whose quality is not much different from the quality of the first team. This is necessary when a major player is injured.
And Arsenal really has to start making good use of the transfer market. No need to make many player transfers. But you only need 3 or 4 which are of very good quality. And currently Arsenal has made several good moves, such as Arsenal getting Kepa, Arsenal also making a verbal agreement with Martin Zubimendi, and Arsenal also negotiating to get Christian Nørgaard. And apart from that, Arsenal is also still looking for a sharp striker.
Four transfers are not that few, considering that Arsenal only needs top-level players, which could mean very expensive signings. Arsenal spends a lot of money on transfers every time, but in recent seasons that hasn't brought them any closer to winning titles. I remember reading an article in the summer of 2023 with the headline, that Arsenal had spent more on transfers than any other Premier League club. I think they consistently spend quite a lot, and I don’t want to go deep into this now, but I believe that with such spending, there should be titles.