According to The Hollywood Reporter, the ‘Magic Mike’ actor signed off on the agreement this week.
The news comes only a few days after rumours that his participation in the ‘X-Men’ spinoff were in danger over contract clashes.
Tatum has been loosely attached to the movie since he made a surprise appearance at Fox’s ‘X-Men’ panel at this year’s Comic-Con.
Last month, the 35-year-old actor even told Digital Spy how he plans to prepare for the role of the card-throwing mutant.
‘Gambit’ is expected to be out in cinemas in October next year. It will follow the release of ‘Deadpool’, which is out in February and ‘X-Men: Apocalypse‘ in May.
Are you glad Channing is officially tied to ‘Gambit’?