so which is it?
Both. Great coaches are worth as much as great players, but currently even the best players are paid too much, and the salaries and transfers are way too high.
IMO, the standards of the late ninties, early early 2000s (or how you would say it) when transfers of 30-40 mil € were considered spectacular and wages were for the best players around 5 mil €, were acceptable, but now when Real pays 400 mil € for 3 players is crazy.
So for example if we pay Buffon 5-6 mil € we shoudl also pay a great coach that much.