Martin Murray is relishing the step up to super-middleweight after switching to Eddie Hearn's Matchroom Boxing.
The 32-year-old from St Helens challenged at the very top of the middleweight division and was twice denied world titles by controversial points decisions - drawing with WBA champion Felix Sturm in December 2011 before losing a unanimous decision to WBC king Sergio Martinez in April 2014.
Murray won many fans despite suffering an 11th round technical knockout to WBA super champion Gennady Golovkin in February and having proved himself at the summit of the middleweight division, will make his debut at the 168lbs limit on June 26 on another busy night of Sky Sports boxing.
Murray told Sky Sports: "The decision to move up to super-middleweight was one I made with my team.
"I can still make middleweight and I would do if the right opportunity arose. I do believe I'm the second best middleweight in the world behind Gennady Golovkin.
"We've said for a long time now though that being at middleweight is affecting my power, my strength and speed. Those last couple of pounds take a bit away.
"We've done what we can at middleweight for the time being so I'm stepping up. Super-middleweight is great domestically and we have world class and world champion fighters. It's a great division to be in and I'm looking forward to the new venture.
"I've just finished my fourth week of training for my fight on June 26. I'm punching well and punching hard. When I go under 11 stone 12 I just feel like the power goes away from me a little bit. It's always been that way, losing power trying to make middleweight.
"Obviously with that extra eight pounds now, it's not a case of adding eight pounds on and getting bigger, it's a case of not taking eight pounds off. This isn't about me moving up. It's about me fulfilling my potential and I'm going to be a better super-middleweight than I was a middleweight."
While Murray admits that a shot at WBO middleweight champion Andy Lee could tempt him back down a division, he is already determined to make his mark on a star-studded super-middleweight scene and is excited over the prospect of fighting in front of a wider audience.
Murray added: "I'm willing to make middleweight again like I said, if the right fight comes along. I'd love the fight with Andy Lee.
"We have world class fighters domestically at super-middleweight and those are the fights I want. George Groves, James DeGale and Carl Froch - they're all great fighters. I want to be in the big fights and they're the ones for me.
"Those are the fights I'm aiming towards but really, the goal is to be world champion. I've proved in the past that I'd fight anybody so with Matchroom and Eddie Hearn it's now about me getting promoted properly over here and being manoeuvred into the best position.
"I'm established as a fighter on the world stage so it's not like I'm starting out. When I finally got on Sky and got some exposure, I was loving it. Then the South Africa deal came up and I'm still good friends with my promoter and the people over there. It was the right thing for me to do at the time.
"You can't beat exposure. I've established myself as world class. With Sky Sports and Matchroom, it's the perfect platform to do it. I'm made up to have signed and the UK fight fans can look forward to seeing a lot more of me because I'm going to put on some good shows for them."