Sir Steve Redgrave reveals he has spoken to Darren Fletcher after the Manchester United midfielder was revealed to be suffering from the same rare bowel condition.
Fletcher is taking an extended break from football to try to recover from ulcerative colitis.
Five-time Olympic gold medallist Redgrave was diagnosed in 1992 and tells Radio 5 live's Sportsweek that he has spoken to Fletcher on the phone to offer his support.
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