He says the 38 year old will campaign at cruiserweight – and admits the ex-Manchester United and England star had to convince him to train him.
“When I was first asked to train a professional footballer I said: ‘No,’” said Woodhall. “I was wasn’t interested. It sounded like a gimmick, but (sponsors) Betfair were very persistent and when they told me it was Rio, I was interested.
“I always admired him as a footballer and he has that mental toughness.