The former unified heavyweight champion is aiming to regain the titles he misplaced to Ruiz Jr on Saturday night in Saudi Arabia.
The determination to stage the rematch in Saudi Arabia was broadly criticised, with the nation persistently accused of human rights violations.
Saudi Arabia massively outbid rival venues in New York and Las Vegas, and the Daily Star declare Joshua will pocket the most important pay day in British boxing historical past.
Ricky Hatton’s £20m struggle purse in opposition to Floyd Mayweather in 2007 stands as the biggest pay day for a British boxer, however Joshua will eclipse that determine.
While Joshua earns slightly below £50m for his look in Saudi Arabia, Ruiz Jr will obtain simply over £10m for the second struggle.
Joshua’s earlier finest pay day was the £18m he earned in his first showdown in opposition to Ruiz Jr at Madison Square Garden final June.
With Sky Sports charging £24.95 for the pay-per-view, Joshua’s earnings are set to go even additional than £46m.
Joshua is the favorite going into the second struggle, simply as he was for the primary bout.
While Ruiz Jr has vowed to shock the world a second time, Joshua insists he treats his boxing profession like a 15-year jail sentence.
‘When I went into boxing I was getting into a lot of trouble,’ Joshua stated.
‘A significant courtroom case, I beat the courtroom case, and I prayed “God, if you give me a second chance at life I will make all the changes in the world”.
‘When I beat that courtroom case, I received into boxing and I targeted. Same factor with Ruiz, give me a second likelihood and see what I can do.
‘When I had that second chance at life when I was getting in trouble, I just dedicated myself. I said I would put myself on a 15-year prison sentence to boxing and have that focus.’