He was unhappy that Antigua is the man and got paid.
This.
Illinois isn't giving any raises or extensions until next spring and GA is the top priority.
TA is already earning near the top dollar for assistants. It is not about the money per se. It's Antigua getting more, and he wasn't part of the EE run.
When Josh said no to a raise and extension, he tried to leverage the offer from Memphis.
When that failed, he apparently started looking at taking a break from coaching. That's my impression. I hope it didn't make Jobu tired.