Joe Gallagher has told rival trainer Shane McGuigan to show more respect having only 'been in the sport two minutes.'
Gallagher trains WBA world super-bantamweight champion Scott Quigg, who takes on IBF holder and McGuigan-trained Carl Frampton at the Manchester Arena on February 27, live on Sky Sports Box Office.
Gallagher and McGuigan have traded harsh words since the fight was announced, and the Mancunian has launched another salvo with fight night just over a week away.
McGuigan has recently added David Haye and George Groves to a host of young hopefuls under his regime, but when asked if the 27-year-old is a rising force in the game, Gallagher told Sky Sports: "How can you have a trainer as a rising force in Britain? You're having a laugh there aren't you?
He's got a few fighters with him there now, but he's only been in the sport two minutes and the jury is out until he brings someone in from scratch like other trainers have all the time.
"Listen, Shane McGuigan has been in the sport two minutes. He's a former amateur boxer. Obviously he took over once Gerry Storey stepped down before the Kiko (Martinez) fight, so he's doing well with what he's got.
"He's got a few fighters with him there now, but he's only been in the sport two minutes and the jury is out until he brings someone in from scratch like other trainers have all the time.
"I do feel he's come in and been a bit disrespectful to people who have been in the game. I see sneaky little videos where he calls me this and calls me that. It's like, hang on a minute, I've served my time as an amateur coach and as a professional coach.
"When I came into the sport, I wasn't calling Brendan Ingle, Johnny Eames, Jimmy Tibbs. Just get in there, do your work. Pipe down and let the results do the talking.
"I've never disrespected Shane or Carl. The hostility they're having towards me and you can only take it so much. If you want to give it, you've got to be able to take it. We've just sent a few little hand grenades back and as you've seen in the press and media tour, they are jumping up and down.
"It's not a case of him handling it better than me. I'm there to be employed by my fighters. He's there and he wants to be the pin-up boy of British boxing.
"I don't feel it's going to go long. I don't think it will go more than six rounds. That all depends on Carl. But once Carl stops running, stands and fights, and he doesn't do that tippy-tappy amateur stuff. When he wants to have it, he'll get took out."
Gallagher recently hinted the rivalry between the pair will not end with Frampton v Quigg; his fast-rising super-middleweight star Callum Smith looks likely to face Groves in the future.