Howerton has already made it clear that his decision to stay or leave Always Sunny won’t depend on the status of his NBC project, which makes sense.
That said, Glenn Howerton won’t necessarily be lacking for work if It’s Always Sunny in Philadelphia does go in a Dennis-free direction after Season 12.
It sounds like everything depends on what makes sense for the Always Sunny story.
Kaitlin Olson recently debuted her own comedy series on Fox without leaving her job on Always Sunny.