The blockbuster bout between Paul and Tommy goes down in Tampa, Florida, next month.
Both men will be earning big purses, with John claiming his son is getting paid more than some world champions for his showdown.
However, he also divulged some interesting details in the contract - saying the 24-year-old American has avoided VADA (Voluntary Anti-Doping Association) testing.
'The Problem Child' has been previously accused of being on PEDs, with Georges St-Pierre's former coach Firas Zahabi convinced he was on drugs ahead of his fight against Tyron Woodley.
And John admits he's a 'little bothered' that Paul has refused to enter the drug testing pool for his bout against Tommy.
"Listen, Tommy's getting paid more money for this than some world champions," he said via the Manchester Evening News.
"He's getting paid in the millions, so if we get millions for getting wet we're gonna do it, because it's good business."
On the VADA testing, John added: "There's all kinds of stuff in the contract, as you've got to do this and you've got to do that.
"I could go into it more and more, but I don't want to bore people with the politics.
"They wouldn't sign up to the VADA testing as well. That bothered me a little bit because I wanted that in the contract, but they wouldn't do that.
"I'm not even bothered about that, because of what they're going to do, they're going to do anyway.
"We just want the fight because we know we can win it. People think that Tommy's getting paid to lose, they're joking.
"A Fury would rather be put to death than go down that road."
Paul himself even admitted that he'd not been tested in the build-up to his fight with Woodley earlier this year.
And that trend will continue heading into his fifth professional fight.
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