He has resolved conflicts and rivalries between fighters and promoters, including Hearn and Warren, and there is increased hope Fury and Joshua could finally happen.
WBC champion Fury arrived in Riyadh earlier on Tuesday and is expected to be ringside on Friday as his brother, 27-year-old Roman Fury, is fighting on the undercard.
“I think years ago that might have affected AJ, but not anymore. Now he’s just laser focused,” Hearn said.
“Be interesting to see what Tyson Fury does at ringside.”
As Saudi Arabia faces repeated accusations of using elite level sport to deflect conversation away from its poor human rights record, their investment in boxing does not appear to be slowing down.
While the interest of the locals is questionable, with a lack of fans attending the fight week festivities so far, the money being pumped into the build-up is staggering.
The production levels for the promotional videos – lending to the arcade fight computer game theme – would put many Hollywood trailers to shame.
The purses have not been revealed but Forbes sensationally report, external Joshua could earn $50m with Ngannou taking home $10m.