Carl Frampton has vowed to lay Luke Jackson "out cold" when the pair meet in the ring at Belfast's Windsor Park on Aug. 18.
Frampton (25-1, 14 KOs) has not recorded a knockout win since a TKO victory over Chris Avalos back in 2015, but made the promise after Jackson claimed he was "very beatable" and "not as good as he once was".
And now, Frampton has firmly run out of patience with the former Olympian.
"He has annoyed me a little bit, but not enough to take my mind off the game and be overly aggressive," Frampton said.
"He has annoyed me enough to want to flatten him and put him out cold, properly.
"I haven't knocked anybody out in a long time, but Luke Jackson is a guy who is going to get knocked out."
Australian Jackson (16-0, 7KOs) competed at the London 2012 Olympics and taunted Frampton about his amateur career during the build-up to their contest.
"He keeps talking about his amateur career. Who give a f--- what he did as an amateur?" Frampton said. "He isn't Vasyl Lomachenko.
"Let's not forget he is based in Australia. If Australia sent a 10-man team to box an international against Ireland they would get beat 10-0, and that's a fact.
"His amateur career wasn't even that good when you look at it. The reason Australia can send almost a full team to the Olympics is because they box Fiji, Samoa and Tonga.
"It is a lot easier qualifying process compared to what Ireland and GB have to go through for the Olympics. This is professional boxing and it's almost a different sport. He will see on the night."
Frampton's bout with Jackson will top the bill at Windsor Park on Aug. 18 while Tyson Fury continues his boxing comeback as he takes on Francesco Pianeta on the undercard.