Chisora and former WBO champion Parker square off on May 2 (NZT), both tuning up with new trainers.
American Buddy McGirt, the man in the corner of Chisora, doesn’t believe Parker will be able to handle the “heat” coming his way.
"I mean it's not going to be an easy task, but we've just got to keep the heat on him," McGirt told Sky Sports UK.
"It's not a secret. Keep the pressure and the heat on, and make him uncomfortable, every second of every round."
When he was asked if Parker could handle these tactics, McGirt didn't hesitate: "No, personally no.