No matter what the punch is, even if Fury slips and falls to the uppercut himself, a win is a win. Since this fight will somehow be official, then someone will write 1 on their record, and someone 0. But for me it will still remain a shameful circus (on Fury’s part) that chickened out and deprived the audience of the unification fight.
He cannot blame someone for that if ever his fight against Francis Ngannou will not be fruitful as he expected and hence will be a huge embarrassment to his career because he shook the wrong tree instead of continuing his way in the boxing career for the unification fight. For what it's worth, he have this coming and since this will be a professional bout, he should expect already that Ngannou will be coming to him hard because Ngannou himself doesn't want losses specially now that people are doubting him, he loved that!
In my opinion, it is too late to argue since Fury has already consistently disgraced himself (the first time he ran from Klitschko). I fully admit that in the future Fury may collect all the belts: the first way is to wait for the older Usyk to weaken and beat him “guaranteedly”, and the second way is to wait until Usyk loses to someone else and then take the belts. But all this will already make little sense, besides, the show fights are addictive - a lot of money with a minimum of effort and risk. It's hard to come back from this.
Fury has nothing to prove anymore, in my opinion. He already proved himself when he defeated a prime Wilder twice. During that time, Wilder held the number 1 ranking, and Usyk's name wasn't even in the discussion of champions. So, I don't think Fury is waiting for Usyk to get older or to lose to someone before claiming his belt. It's probably just a matter of negotiations between the two camps in terms of finances that hasn't been agreed upon yet.
. Tyson Fury is technical is every aspect of defense and counter punches and not just exhausting the opponent 
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