It seems to be largely Channing Tatum's status as a Hollywood A-lister and his enthusiasm for the project that have kept the movie from falling apart over the last few years.
That said, on the film side of things, the X-Men franchise just can't seem to make him work. Hailing from New Orleans, Gambit is perhaps best known for manipulating playing cards.
Gambit, the member of the X-Men whose very name implies a certain amount of luck (even though his actual powers have nothing whatsoever to do with that) simply can't catch a break when it comes to directors. It's possible that the issue really could've been "scheduling", though if you're directing a big-budget movie like Gambit, you'd think you'd block off a year-or-so of your schedule.
Though Deadlinereports that the split between Gore Verbinski and 20 Century Fox has been an amicable one that was more or less because of conflicts in schedule, this is the third time that Gambit has lost its director.
It's unclear if the search for a new director will impact the start of production, although 20 Century Fox recently delayed the release of the film. Rupert Wyatt, Doug Liman and Gore Verbinski are all talented filmmakers with distinct creative visions, but there's an argument to be made that they might not have the same connections with the Gambit source material that someone like Tim Miller had with Deadpool, or James Mangold had with Logan. In this writer's opinion (one which has been echoed on CinemaBlend before), it's time to let the project die. The good news is that it sounds like this will still be the case as and the movie will definitely be the full-blown horror that they want it to be, fans will just have to wait a while longer for it.
Essentially, it will be trading places with another of Fox's "X-Men" films, "The New Mutants", which had been scheduled for June 7, 2019, but which will now land February 22, 2019.
Nobody really knows what the problem really is with the Gambit movie. Given that Disney is in the process of purchasing Fox, any further delay could well spell the end for the troubled project.
So, what does the future hold for Gambit? Lizzy Caplan (Mean Girls, Now You See Me 2) will join Tatum in the film.