"I told them, 'listen, I've been with Don King, Donald Trump, Frank Warren ... I've been with the biggest promoters in the world and I must say they're doing an excellent job'."
Botha admitted in his strong South African accent that his mistake when fighting Williams was that he allowed him to go the distance in their highly controversial bout, however, for Parker, he won't be so lucky.
"I allowed him [Williams] to go the distance, I could have taken him out even earlier but then they took two rounds off me. He wouldn't have gone 10 more seconds. But, it's not his fault - he's just a fighter.
"He's a nice guy, he's got nothing to do [with the fight being shortened]. I allowed him to go the distance and if I knew [that there were 10 rounds instead of the 12 which were promoted] I would have started earlier."
Having an international boxing star like Botha in Northland is a rare occasion for the region. Not many visitors, or locals, could say they have fought some of the biggest names in the boxing world - including world champions Lennox Lewis, Mike Tyson, Michael Moorer, Shannon Briggs, Evander Holyfield and Wladimir Klitschko.
While the 6-foot-2 Botha was only in town for the afternoon, he was more than happy to pose for photos with fans and locals who had to look twice to recognise the burly heavyweight.
Botha hoped his visit to the region would not only promote the sport of boxing, but also win some fans, as he spoke of the skill level of Kaikohe boxer Daniella Smith who is fighting on the Botha v Parker undercard.
"The female fighters nowadays are getting a lot of attention, because they're getting better. There's no sloppy female fighters anymore.
"One of the Australian fighters the other day, I forget her name, they [Duco Promotions] want us to promote her, but she can't fight.
"It's like what's going to happen if there's a dwarf fight? That's entertainment. A lot of people don't want to see [boring fights], especially when you see heavyweights ... a lot of heavyweight fights are boring.
"[Heavyweights] are a bit older and not a lot of clean shots are landed sometimes. People now are seeing females and dwarfs fighting, that's entertainment."
In Whangarei with Botha was his son Marcel who will also be fighting on the undercard against the younger brother of Australian singer Guy Sebastian, Jeremy.
Botha believed having his son fight on the night was a gift from God, adding it will be a special moment for Marcel who will have to take to the ring without his father ringside. "I feel I'm getting old now my son is fighting," laughed Botha. "I should be taking him to the ring but I think he should have his time, let me have my time and the coach can go out with him and do his thing.
"When I'm done [with his boxing career], I'll be there in his corner and I'll take him but for now let him go. I seen him winning titles in different divisions, I mean he smacked me when sparring and I could feel my toes curling."
In relation to when Botha may be looking at ending his own career he gave no hints, saying at the moment his boxing schedule is jam-packed but once he's disposed of Baby Joseph he wants to get in the ring with David Tua.