rtokens: The Briton , who lost his World Boxing Council ( WBC ) title to Mike Tyson in March , said : " I was in shock as soon as he told me and it still has n't really sunk in .
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tokens: An eye specialist told the 35-year-old Bruno that he could be blinded in one eye if he boxed again , the newspaper said .
ltokens: Former world heavyweight champion Frank Bruno has quit the ring on medical advice , Britain 's Sun newspaper reported on Friday .