The heavyweight contenders meet in a crucial clash on May 1 and Parker's manager David Higgins suggests that the Kiwi will send Chisora into retirement by beating him.
Higgins told the Ringside Toe 2 Toe podcast: "On his day, he [Chisora] can show up and knock someone out, like he did against Carlos Takam and so we've always got to be wary of that.
"But provided that Joseph Parker does not make a silly mistake, and executes his game-plan, then I see him retiring Derek Chisora. I'm not sure what David Haye does, besides managing Chisora, and so because I like the bloke I might offer him a job with Duco Events. David Haye is welcome to come and work here in New Zealand, for me, after the fight."
Winning the fight is seen as crucial for Parker for his hopes of getting back in contention for a world title belt and promoter Eddie Hearn previously predicted fireworks between the pair.
He said: "That's just going to go off, from the first bell, that fight.
"Actually, Joseph Parker is right up there, since his win over Junior Fa. He's top five, top six with a couple of governing bodies now.
"If he beats Chisora, when these belts become fragmented in probably 2022, this is a really important fight for him."
Hearn added that it may well be Chisora's last chance to prove he belongs at the top of the heavyweight division.
He said: "For 'Del Boy', of course it's the last roll of the dice, in a big, big heavyweight fight."