Trainer of Daniel Dubois, Don Charles, says he isn't happy about the fact his former fighter Derek Chisora could be the IBF heavyweight champion's next opponent. The IBF confirmed to The Ring last week that on April 22, they would order Dubois to defend his title against against their No. 2 contender Chisora, who finds himself in a mandatory position after the sanctioning body nixed plans for Martin Bakole and Efe Ajagba to fight for that honour.