He’s done with Yellowstone and I believe even has litigation open against the show runner who is running the show into the ground. Last year Costner reached out to ask Sheridan about the script for S5 part 2 because he won’t have time for Yellowstone once Horizon stuff starts and Sheridan didn’t have anything ready so now they’re killing Costner’s character off and he opened litigation that he shouldn’t be because Sheridan is mismanaging the show.

Looks that way.