I forgot Ryan in my rant. He has been solid. And I would sign him permanently as number 2.Arteta didn't sign Pepe. Mari started off poorly but he's improved over time and he's a decent ball playing CB. Willian is a serial winner and you need that sort of mentality in your squad, fair enough he hasn't been up to the standard but he will have influenced the younger players like Saka and ESR. Soares came in because AMN didn't want to play as a right back which is arguably his best position. Ceballos is OK as a squad player. He's probably our only midfielder we have who links midfield to attack effectively but is just a little lightweight. He's just a loan anyway and was only signed because our first choice (Houssem Aouar) wasn't available. Why don't you mention Matt Ryan who is a solid goalkeeper? You mention Runarsson but the club moved quickly to rectify it with Ryan and I rate him highly.
Arteta says he needs his own squad. He has signed about 6/7 players and none of them have improved the team nor results.
Tell me this. Just say somehow Mikel has 100m to spend on 3 players in the summer to improve the starting 11. Who do you buy? Give me realistic players who will come in and improve the starting 11.