How does Nogueira not "deserve" him. This is a man he has beaten before.
You don't make fights based on the pending result of another fight, because anything can/will happen
Minotauro hasn't beaten a Top 10 fighter since Couture? And Josh just finished the guy in R1 that finished Noguiera twice. Barnett would rout Minotauro at this point and it would do nothing for him in terms of getting a title shot.