I think they're in a bit of a standoff.
Manny doesn't want to fire him for optic reasons among others, so he banishes him to the box upstairs, doesn't allow him to recruit -- kinda sending him a message.
Problem is Rumph isn't going on his own or seeking employment elsewhere bc who tf would turn down 200 + K check to basically just coach?
They're like this old married couple that barely speaks or interacts and you're just like "why don't y'all just get divorced already?" to which both parties kinda just shrug and say "I don't know, why don't you go ask them?"