Whatever. I don't really like a lot of his transfers, but there's not much difference between the squad he did 72 points with and the squad Koeman inherited. Biggest subtractions (by appearance) are Osman(41), Distin(37), Naismith(35), Stones(26), and Pienaar(25). We can go back and revise history all we want, but all I'm saying is that you don't need to spend £200M to replace these 5, and there isn't much between a team that succeeded and a team that Koeman left in shambles.
TL;DR, too much introspection about transfers and players, it's terrible management that's left the squad in shambles, and it's really down to 1 or 2 managers.