Anthony Joshua defeated Otto Wallin in Saudi Arabia last December.
And the big Swede, 33, expects AJ to get the better of his countryman Dubois at Wembley.
Speaking to Action Network, he said: “I think that Dubois and Joshua will be a good fight.
“If Dubois comes out like he did in his last fight against Hrgovic, he was hit a lot, with one-two’s.
“You can’t take those shots from Joshua because his punch is very, very hard.
“So if he comes out the same way against Joshua, then I think Joshua wins by knockout before round five.
“But if Dubois has tightened up his defense a little bit and can hit Joshua with a few good shots then it could turn into an interesting fight.”