Fox received one of the biggest hits of the year in Deadpool, a movie that had been stuck in development for the past decade. Ryan Reynolds continuously pushed for the movie to be made, and it eventually was green-lit after leaked concept footage spread like wildfire across the Internet. Reynolds’ belief in the movie paid off big for Fox, as the R-rated superhero film eventually grossed more than $750 million in theaters worldwide. Plans for a sequel were in motion even before the movie hit theaters – with the Deadpool post-credit scene revealing that the time-traveling mutant known as Cable would be appearing.

If there was one reason for fans to worry about the film throughout production, however, it was having first time director Tim Miller have control of the film. However, Miller proved that he was able to handle the load of the superhero film and was then set to return for Deadpool 2. Unfortunately, that will no longer be the case.

Deadline has revealed that Miller has left the highly-anticipated sequel due to creative differences with star and producer, Ryan Reynolds, who plays the Merc with a Mouth. The split is reportedly mutual, with Deadline stating Miller and Fox are still on good terms. Miller never officially signed on for Deadpool 2, but he was involved with the screenwriting process. Nonetheless, he and Reynolds could not see eye to eye on the direction that the sequel should take.