The New Zealand boxer will bid to become heavyweight world champion for a second time against Dubois on Saturday (22.02.25) and admits that he isn't turning his attention to the prospect of a unification bout against Oleksandr Usyk should he come out on top.
Parker told Sky Sports: "It's not locked in as a rematch but it's a possibility that it could happen.
"Fight Daniel, win, not sure if there's a rematch or if I can fight Usyk or whatever else they have planned for me. It's just to fight Daniel and see what's next.
"I can say I'm going to fight Usyk but plans always change. There's options out there. But the most important thing is to win."
Parker is convinced that he will be able to beat Dubois because he knows what tactical approach the IBF world champion will take to the contest.
He explained: "It's not like a surprise, you know what he's going to do - he's going to come forward and throw shots.
"I do have to be on point. I have to be a lot better than I was with [Zhilei] Zhang and [Deontay] Wilder. I feel like I have to because of the pressure he comes with and also the combinations that he throws. He's a powerhouse. So I have to be a lot better and a lot more on my game.
"We've come with a good plan to be able to get out of the position of what he's going to bring and to counter back with what we're going to bring."