According to IBF, WBA, IBO heavyweight champion Anthony Joshua (20-0, 20 KOs), there is no problem with making a unification against WBC champion Deontay Wilder (39-0, 38 KOs).
However, he believes Wilder must be realistic with his demands.
Wilder and his camp believe the fight should be split down the middle - at 50-50 terms. Joshua and his promoter, Eddie Hearn of Matchroom, believe otherwise.
One thing Joshua says he won't do is negotiate with Wilder in the press. He says Wilder is attempting to get a deal done through media outlets and social media, while the British star has no interest in working out the deal in the public.
"Yeah, why not? I've always handled my business with negotiations behind closed doors. When things are done, I'll announce them. I am not in the business of making promises that I can't fulfil. I am working on getting this fight done. Providing Deontay Wilder is true to his word this fight will happen in 2018," Joshua told Dubai Eye 103.8.
"It is simple business. We have worked with all-time greats like [Wladimir] Klitschko. We have managed to defend this title five times. If they are realistic about what they want, we can definitely make this fight happen."
Last week, Hearn sat down with Wilder's managers, Al Haymon and Shelly Finkel, to begin the discussions for a unification in 2018. He says their meeting went well and they plan to talk further in the future.
Wilder has accused Joshua of running from the fight, stating that the British star is afraid to take a loss.
On the contrary says Joshua, who points out that every legendary heavyweight has taken a loss at some point and then bounced back.
"Once you reach an elite level in any sport, you're going to meet stiff competition," Joshua said. "At heavyweight, even the greatest of all time - Muhammad Ali, George Foreman, and Jack Johnson - have taken a loss at some stage.
"But if you lose that does not mean it is the end of you. It is how you come back from that. Most heavyweight champions are two or three-time world champions because they've achieved; made a mistake; and come back better. That's just the way life is. Losing my unbeaten record will never hold me back from competition because I thrive off it and it makes you a better person in the long run."