David Higgins, manager of former WBO heavyweight champion Joseph Parker, believes there could be a lot of turmoil in the Derek Chisora training camp.

Parker and Chisora are scheduled to collide on October 26th, as part of the junior welterweight unification clash between Regis Prograis and Josh Taylor.

It was revealed at their recent press conference that Chisora had parted ways with head trainer David Coldwell. Chisora and Coldwell were having success, with the London heavyweight demolishing Artur Szpilka in July.

At this point Higgins is wondering if former world champion David Haye, who manages Chisora, will also play the role of trainer come fight night.

Higgins told Sky Sports: "I'm assuming David Haye is the trainer, because no-one knows? I tell you what, their mental state is 10 times worse than mine, and that's saying something. It's plain sailing for Parker in Vegas, it's utter disarray with Chisora in London, however, he remains dangerous.

"He's been in disarray before and pulled a rabbit out of a hat, so we don't underestimate Derek Chisora, or his camp at all, not one bit. We take them very seriously, in fact, it's a cracker of a fight. Might be one of the best heavyweight fights of the year at The O2 Arena. We're serious, but Joseph at his best should beat Chisora."

Higgins cautions that Parker will not fall for any of Chisora's mind games. During their press conference, Chisora threatened to withdraw from the bout - because he was angered that his contest was being placed in the co-featured position on the card.

"They can try all the mind games they want, but it might even strengthen Parker," said Higgins. "It doesn't work on Parker, the mind games. Joe will probably laugh at him, I reckon. I loved the performance at the last press conference."