Former Manchester United and England defender Rio Ferdinand has expressed disappointment at being denied a professional boxing licence.
The British Boxing Board of Control (BBBofC) said they would not be reviewing his application as confirmed by the former defender to BBC Sports.
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The 39-year-old who after football retirement in 2015 launched his new career last September in a statement published on his Facebook account confirmed he will be hanging up his gloves after his application was turned down.
"It is with a heavy heart that I am hanging up my gloves. To not be given the chance to demonstrate my ability to the BBBofC through the standard assessment afforded to others is hard to take.
"Boxing is a physically tough, demanding and dangerous sport. I always gave it my utmost respect and never underestimated how difficult it would be.
"It's important to approach everything with success in mind,
and to give it your all, but sometimes things work against you.
" said Ferdinand
Ferdinand's move into the ring was being backed by betting company Betfair, as part of the 'Defender to Contender' challenge.
Coached by former WBC super-middleweight champion Richie Woodhall, the six-time Premier League champion aimed "to win a belt".