I would watch it. But I don't think there is a need for it. I'm not really sure what AJ could do change the result.
I do think aj can win a rematch if he fights more aggressive, he was letting Dubois take ownership of the ring and fight. Aj getting Dubois hurt at the end will definitely give aj optimism
I still think Joshua can win. Even when he was hurt he landed a power punch that stunned Dubois. He just needs to go to swing and bang rather than try to dance around Dubois popping the jab. Even then, I'd say its 50/50
As I said, Joshua will get another chance because he is Hearn's protege, I wouldn't mind seeing Dubois destroy him cold again...