Matt bet Leicester City and Nottingham Forest youth groups when he was 16.
But he started struggling with spondylosis, a degenerative condition which impacts the spinal column.
Matt informed Desert Island Discs: “It was extremely hard for me to inform individuals that I had actually been launched (from the group).
“The vain part of me was like: ‘I am Matt and I am the footballer’.”
“It was a tough time because I just felt unfulfilled.”
He stated he felt “certain” that football was “what I was going to do”.
Matt, 35, never ever saw an episode prior to he ended up being the youngest Doctor Who in 2009.
He likewise admitted he believed drama was “a bit girlie” initially, and kept it secret from buddies.