our reporter ade, ade doyin is there.e to find a credible opponent for him to make his debut here at madison square garden. this is afterjarell miller tested positive for another banned substance, human growth hormone, in a drug test last month. the new opponent can probably name his price as it will be such short notice. miller has blown the biggest opportunity of his career, and perhaps the biggest payday of his career, as he was due to earn over $5 million. new yorkers know their boxing, there have been some iconic fights here at madison square garden, and if the opponent doesn't come up to scratch here they will make their feelings known. joshua's opponent will be named next week. also at madison square garden, in the early hours, of tomorrow, amir khan faces one of the toughest challenges of his career.khan weighed in slightly heavier than, american, terrence crawford, and he's a big underdog with the bookies — but he says that victory in this bout will be his biggest achievement. it has to rank up there alongside an