"Alexander has three titles and his next mandatory defense is with the WBO. They have already named a mandatory challenger, which is Joseph Parker, and we need to start negotiating. There are two things that could prevent this fight from happening. The first is if Usyk vacates the title and the second is if he makes a unification fight against Daniel.
The money fight with Daniel should be a unification fight. That's the truth. Nothing personal against Joe. Parker has done a good job of getting where he is. Joe is in a great position. He's a mandatory challenger. So if the Usyk vs. Dubois fight happens and somebody wins four titles, he'll be the first candidate for the fight. It's a good position," Warren told Sky Sports.