“Daniel is going to completely ruin their plans. I tell you, he will knock out Usyk!” Warren said in an interview with IFL TV.
Usyk's manager Oleksandr Krasyuk commented on the British promoter's statement on Twitter as follows: "How scary! I hope Dubois doesn't pull out of the fight at the last minute because we're preparing a big show in Poland."
The duel between Usyk and Dubois, who will have the WBA, WBO and IBF championship belts at stake, should take place on August 26 at the football stadium in Wroclaw.