In his Instagram announcement, Costner opened up about scheduling conflicts with Yellowstone and his passion project, a Western epic called Horizon.
”I want to reach out and let you know that after this long year and a half of working on Horizon and doing all the things that’s required, and thinking about Yellowstone, that beloved series that I love, that I know you love,” he said.
“I just realised that I’m not going to be able to continue season 5B or into the future.”
Speaking to Deadline in May, Costner said he had left filming on Horizon early to fulfil his obligations on Yellowstone.
”There was no script. And then things imploded. You’ve been reading one version [of this behind-the-scenes drama] for a year and a half. I left my movie to be on time for them for 5B,” he said.
Despite rumours, Costner denied he left due to a strained relationship with Yellowstone creator Taylor Sheridan.
The actor told People he “liked the people on the show. I liked what it was about. I love that world.”
He also told the outlet the show was initially pitched to him as one season, but he ended up staying on for five.