2, 3 seasons ago, some of us had already mentioned that.
Arteta, Per, Rosicky, Flamini were going to age and deteriorate.
Diaby, Jack, Ox were going to get major minutes on the treatment table.
Fans could see this and our manager/management could not and not well prepared for this?
Football is unpredictable, but nothing was guaranteed also when we purchased Chambers and Gabriel.
Theo played for Arsenal/Wenger for 10 years, and how much he has improved?
That's why we have 2 windows per season, for teams to reinforce and reload.
What did Wenger/Gazidis/Arsenal do for the past several seasons??
One major signing and then stop. We had multiple windows to repair the cracks and replace the crooks, but we did not. We let the chances pass by, let the market inflates, and still playing the waiting game.
Who's fault it is?
Well, I believe at Arsenal, nobody needs to responsible for anything.