Why unrealistic?
Anderson SIlva demanded money
GSP
Jon Jones
Conor.
And say what you want, DJ is a top fighter as well. Might not be in popularity (though I do think he is a lot more popular than the haters in Sherdog makes you believe), but they know (and market him as such) he is the current P4P #1 fighter in the world, and for as long as it stands, they will try to keep him in.
Heck, they are paying Cyborg more than any other female fighter and they don't even have a division for her!!! (and it's not like they love her!).
So no, I disagree there's any chance he will be booted out to Bellator.
The only way I see him there is if he gets fed up with the UFC's antics and goes to Bellator For the money & respect.