Tyson Fury is said to be ‘sluggish’ during his training camp as more information leaks ahead of his fight with Oleksandr Usyk. Johnny Nelson has reiterated that he has heard concerning rumours about the Gypsy King’s performance in the gym. Fury and Usyk are set to battle it out in a mega undisputed bout in Riyadh, Saudi Arabia on February 17. The pair will put their belts and their unbeaten professional records on the line, ending years of trash-talking. Former WBO cruiserweight champion Nelson said earlier this week that he had received reports from Fury’s camp that he was ‘getting turned ove…