Kevin Costner might be leaving "Yellowstone", due to scheduling conflicts. He's busy directing and starring in a western film called "Horizon" . . . and that could lead to the original "Yellowstone" coming to an end when Season Five wraps later this year....But the show is VERY popular . . . so if that happens there's talk of a possible spinoff with Matthew McConaughey.......This is just a rumor for now though. A spokesperson for Paramount said, quote, "We have no news to report. Kevin Costner is a big part of 'Yellowstone' and we hope that's the case for a long time to come . . .
Photo: Getty Images