George Groves faces toughest test yet against Glen Johnson Johnson, originally from Jamaica and now based in Florida, is tough, durable, and has operated at world level for a decade. Johnson, 43, has lost one third of his 51 career fights, and Groves, unbeaten in 15 fights, steps up to world level for the first time against an opponent who has victories over significant names, such as Roy Jones, Allan Green and Antonio Tarver. A good performance against him will definitely make people sit up and take notice of me. Then I'll be knocking on the door of a world title. Groves will be fighting on the undercard of Ricky Burns's World Boxing Organisation lightweight title defence against an opponent expected to be announced on Thursday. David Haye, who was also at the news conference in London, ruled out ever fighting rising unbeaten British heavyweights Tyson Fury and David Price. Fury has been warned by the British Boxing Board for a tirade of abusive tweets aimed at Price, the British and Commonwealth champion. I'm only going to fight someone whose name is Klitschko. I've had my domestic dust-ups," said Haye, who was 32 last week. What Fury is doing is good. The more he talks, the bigger the fight with Price will be. He should keep talking because he isn't really fighting anyone at the moment. If you're not fighting anyone, you need to do something to keep your name out there.