Daniel Dubois offers to fight Anthony Joshua backstage during heated confrontation
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![Daniel Dubois offers to fight Anthony Joshua backstage during heated confrontation](https://i2-prod.mirror.co.uk/incoming/article33114065.ece/ALTERNATES/s615/0_Riydah-Season-London-Boxing-Press-Conference.jpg)
Joshua looks to become a three-time heavyweight champion when he faces Dubois in September and they almost exchanged blows three months early