Frank Warren has admitted that the episode surrounding Lawrence Okolie ’s failed drug test is “a very, very big disappointment”, after the British heavyweight’s fight with Tony Yoka collapsed on short notice. Okolie was due to face France’s Yoka in Paris last Saturday , but the fight fell through on Tuesday, when it emerged that Okolie had returned an adverse drug-test result . Warren’s Queensberry Promotions, which was organising the fight, shared the news, which they said had come from the Voluntary Anti-Doping Association. Former cruiserweight and bridgerweight champion Lawrence Okolie (Getty) Okolie took to social media to offer a statement, with the former cruiserweight and bridgerweight champion saying: “Before anyone starts imagining the worst, following my bicep injury last year, I sustained an elbow injury on the same arm during this camp. “I had a treatment on it and now we are here. I truly hope sense prevails.…