Fox handed Tatum, 34, the role which was previously played by Taylor Kitsch in 'X-Men Origins: Wolverine', reported Ace Showbiz.
The news of Tatum's casting was first hinted by 'X-Men' producer Lauren Shuler Donner while she attended the 'X-Men: Days of Future Past' premiere in London.
When asked what kind of an actor she was looking at to play Gambit, Shuler Donner said, "It's Channing."
"Well you know, he's a rogue - Channing - he's a rascal, just like Remy LeBeau, and he can handle the action, we all know that! And he's got a really good heart. He'll be great for Gambit and he's a Southerner, too! He's not from New Orleans, but he is a Southerner, and he understands that world."
The film is already in development but no director has been attached.