Carl Frampton: I turned down 'I'm a Celebrity' offer
But the Northern Irish sportsman, who will face Nonito Donaire this weekend for the WBO interim featherweight title, added he may change his mind "in a few years".
Frampton's manager, Frank Warren, also said he had received an offer for I'm A Celebrity and used the opportunity to take a dig at celebrity chef Gordon Ramsay.
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Hide AdWarren told reporters at a press conference ahead of Frampton and Donaire's fight: "I got asked to go in there. I told them my idea of a Bushtucker Trial is eating at Gordon Ramsay's restaurant, so you can leave me out of it."
Frampton said: "I was asked to do it. And I was asked to do Big Brother as well and I turned them both down.
"Only because I'm a boxer and I'm still boxing. But maybe a few years time, if they ask me again I might change my mind."
Frampton could follow in the footsteps of fellow boxer Amir Khan, who entered the jungle in November last year.
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Hide AdKhan was the seventh celebrity evicted from the ITV show in which he was accused by viewers of bullying Iain Lee.
Frampton fights Donaire at Belfast's SSE Arena knowing a high-profile victory will revive his career.
Should he succeed Frampton has next been promised WBO featherweight champion Oscar Valdez or the winner of May's fight between Lee Selby and Josh Warrington for the IBF title.