James 'Arg' Argent told fellow Only Way Is Essex star Mark Wright that the singer has "definitely" joined the ITV jungle reality show.
Arg is quoted by 3am as saying: "Guess what? I've just been told that Dougie is definitely going to be on I'm a Celebrity."
Wright, who has reportedly signed up himself, apparently responded: "No way! Swear on your mother's life that Dougie is going in?" before Arg assured him: "I swear! He is!"
Freddie Starr, Benidorm actress Crissy Rock, former EastEnders cast member Natalie Cassidy and ex-Big Brother housemate Imogen Thomas are among those who have been linked with the latest series of the programme, which begins its 11th run in less than a fortnight's time.
I'm a Celebrity... Get Me Out of Here returns on Sunday, November 13 at 9pm on ITV1.
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