This is ridiculously such a basic way of thinking.
A) how do you know for sure he hasn't?
B) even if he has, any given player has to want to come here
C) again, even if he has, maybe the club selling (if not a free) want a certain fee for their asset.
It's never as simple as made out. Doesn't mean he's way over his head. Ironically I think people above him are, and perhaps not backing him as promised...