What that means is it is actually 90% of the $41 million that will be split 80/20 which equates to:
90% of $41 million = $36.9 million
10% of $41 million to the winner as a bonus = $4.1 million
80% of $36.9 million to Fury ($29.5 million)
20% of $36.9 million to Whyte ($7.38 million)
Whyte is looking at arbitration in trying to get that $41 million changed to a straight 70/30 split because he feels he is getting less than he deserves. He is the WBC number one contender. It might have been different if Fury was billed to fight say Wilder or Usyk or Joshua and one of them got injured so Whyte or Parker were called in at short notice to take the fight - then all the negotiating power would be with Fury but Whyte is the official WBC number contender so he deserves to get more than the $7.4 million.
If Whyte drags this out past 21st February 2022 without returning a signed contract to the WBC all the while Fury is making it clear he is sticking to financial arrangements imposed by the WBC, then Whyte will be stripped of the number contender status and will probably not get another chance. Fury will simply move on to another fighter the WBC award the number one contender title to.
https://talksport.com/sport/boxing/1030964/anthony-joshua-tyson-fury-dillian-whyte-purse-bids/
Currently as it stands, Whyte will get $7.4 million for the fight which is around 18% of the $41 million purse and Fury will get $29.5 million which is around 72%. To be fair to Whyte he has a point because he was hoping to get $12 million for a 30% share because he is the WBC number one contender.
Even if Whyte somehow manages to win the fight he will pocket $7.4 million plus the $4.1 million bonus which equates to $11.5 million which is around 28% of the purse. I sympathise with him because the purse split works in favour of Fury because he will probably win in style and pocket the $4.1 million bonus which takes his total of the purse to $33.6 million which is around 82%.
It seems it's actually an 80/20 split according to sources (unless they've rounded it up): https://www.ringtv.com/633384-dillian-whyte-continues-to-pursue-equitable-purse-split-versus-tyson-fury/
Which I think is fair to be honest and they're both getting what they deserve. Fury earned a minimum of £20million for the trilogy fight against Wilder while Whyte only earned £4million for his rematch against Povetkin. I can't blame him for wanting more but he's really not the draw here. I don't think the PPV numbers will do anything close to what the Fury/Wilder fights did and next to nobody is going to be watching this for Dillian.
Based on the poll nobody wants to put a bet on Whyte even if he is capable of knocking out Fury, I also don't see him hitting Fury because he is to huge and to quick for Whyte.
He isn't going to let this chance go. He'll just kick up a fuss to try squeeze some extra cash out of the fight but I'd bet a bollock he signs that contract before the deal expires. He loses far too much by not taking it and especially when the belts are on the line.