Welshman Joe Calzaghe has split from long-term promoter Frank Warren.

Super-middleweight and light-heavyweight king Calzaghe has been promoted by Warren since 1996.

But with Calzaghe eyeing up a career swansong - possibly against Roy Jones Jr later in the year - he has ended his 12-year association with Warren.

"I am now a free agent with no contract and intend to be self-managed from now on," the 36-year-old Calzaghe told the South Wales Argus.

The Newbridge-based Welshman is currently big box office in the United States following his points win over Bernard Hopkins in Las Vegas in April.

And with the southpaw vowing to box one last time, he has decided to split from Warren and promote the fight himself.

"My intention is to fight Roy Jones Jr, a four-weight world champion fighter," said Calzaghe.

"That would be a special event for me against a legend of the sport.

"There are issues to be resolved with my former promoter Frank Warren and I hope they can be done so amicably."

Under Warren, Calzaghe became the undisputed super-middlweight champion of the world and added the light-heavyweight crown with his defeat of Hopkins.

He fought 26 times under Warren's Sports Network banner, including career-defining bouts against Chris Eubank, Byron Mitchell, Jeff Lacy, Mikkel Kessler and Hopkins.