The footballer was unveiled as a contestant on The One Show tonight.
James said it had been hard keeping the secret for so long, but that he had told his mother.
James said Foster told him "it was an amazing show and experience".
He will be joined as a contestant by comedian Chris Ramsey and Eastenders actress Emma Barton.
"I'm buzzing, I'm really buzzing," Ramsey said as he appeared on The One Show.
Barton told The One Show she was a Strictly super fan and that she was "over the moon" when she received the call to appear on the show.