The 43-year-old retired from playing in 2020 after his short spell at Portman Road, making six appearances for the Blues.
And Collins is now set to lace up the gloves for a showdown against internet personality Big Stacks, who bills himself as the ‘UK’s Hardest Man.’
Collins has replaced former Apprentice star Thomas Skinner, who withdrew from the fight for undisclosed reasons.
They will meet at London’s Copper Box Arena on October 10 as part of the latest Misfits boxing card.
The Welshman becomes the latest ex-Town play to step into the influencer boxing world as former loanee Danny Simpson made his boxing debut against social media star Danny Aarons in 2024 – a fight which ended in a draw.
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Elsewhere, David Norris and Jay Emmanuel-Thomas are also stepping into a boxing ring as they will compete in A Night to Remember III, a charity boxing showcase featuring ex-professionals.
Emmanuel-Thomas is set to face ex-Newcastle forward Nile Ranger, while Norris, who captained Ipswich, is facing former EFL striker Simon Cox.
The event is being organised by Pro Project Promotions and taking place at London’s Grosvenor House Hotel on October 22.