Former WBO light-heavyweight champion Nathan Cleverly will move up to cruiserweight on his return to the ring on 30 November.
The 26-year-old Welshman lost his unbeaten record and WBO light-heavyweight crown when he was stopped by Sergey Kovalev in Cardiff August, and had hinted that he was considering retirement.
However, according to Wales Online, after a break and time to refocus on his career, the fighter says he is now desperate to get back in the ring and win a second world title in 2014.
He is looking to make a big statement on his cruiserweight debut and says he may face Kovalev again one day.
Now he has a chance to fight for the vacant Commonwealth title against Daniel Ammann next month.
"I'm ready to return and I can't wait for November 30th," Cleverly told Boxing News.
"I've got the hunger and desire back and I want to be a world champion again. I miss having the belt around my waist, but it's not just about the belt.”
Australian champion Ammann, from Stockton in New South Wales, has a record of 29 wins from 35 fights and is on an unbeaten eight-fight run.
"It's a good test for me on my return and the opportunity to win the Commonwealth title is a big motivator and will open doors for me," said Cleverly.
"Ammann is a proper cruiserweight and has even fought at heavyweight, he's been around a long time and will have plenty of experience. He looks like a big, rough, tough Aussie and I'm not expecting an easy fight.
"The main thing for me is to show that I'm back in business and ready for my new campaign in the cruiserweight division and I want to put on a good show for the fans and press."
The event, at London's Copper Box Arena will also feature Dereck Chisora, who is making the first defence of his European heavyweight title against Matteo Modugno.