RK and SW are supposed to both sign off on a player. RK is clearly the more forceful personality but it appears SW got his way with Gana and Lookman.
Not certain about the others but I suspect Bolasie was mainly RK's as would be Morgan and Depay. If we spend whatever funds there are on the likes of Depay the cash is going in the drain.
I'd prefer to see SW with the final say so that a currently poorly performing manager can prove his metal by developing more players like Lookman.
You say he's a poorly performing manager. Where do you think this squad should be ?