Kevin Costner's differences with the producers of Yellowstone have spilled into the spotlight in recent weeks due to a standoff over his schedule, but according to a new report, there have been tensions behind the scenes for years, going back to nearly the beginning of the show.

Deadline reported in early February that Yellowstone might come to an end at the conclusion of its current season because negotiations with Costner have stalled over scheduling.

According to Deadline, Costner originally negotiated for a shooting schedule of 65 days each season when he signed on for Season 1 in 2018. He negotiated to cut his obligation to 50 days to shoot the episodes in the first half of Season 5, since he is currently directing, producing and starring in a project of his own called Horizon, an epic, four-part Western film that's a massive commitment.

Deadline reports that Costner, who stars as Dutton patriarch John Dutton on the runaway hit show, has been negotiating for a shooting schedule of just seven days for the back half of Season 5, and the network has refused. Paramount has reportedly decided to bring the show to a close and focus on another show to replace it in the overall Yellowstone franchise, which also consists of last year's 1883, the current 1923 and at least two upcoming shows, Bass Reeves and 6666.

It's the first time any behind-the-scenes dysfunction has spilled over into public view, but in a new report from Puck News, multiple sources say ego and power clashes between Costner and series creator Taylor Sheridan go back years, beginning with the first two seasons, when Costner tried to give Sheridan — whose deal with Paramount states that he doesn't even accept notes from the network — his own notes on some of the episodes.

As the seasons went on, Costner also reportedly asked for additional compensation for promotional travel despite earning $500,000 per episode in Season 1. His reported salary for Season 5 is $1.2 or $1.3 million per episode, with a guarantee of $1.5 million per episode in the event of a Season 6.

Yellowstone's Season 5 was supposed to shoot entirely in 2022, according to Puck News, but it got expanded from 10 to 16 episodes and will now air in two halves, partly because Sheridan's attention was split between a number of other shows, including 1923Tulsa KingMayor of KingstownLionessLand ManBass Reeves and more. The second half is now slated to resume filming in 2023.

Costner already has that time earmarked, and his lawyers are asking for a greatly diminished shoot for his scenes to fulfill his commitment. Sheridan is unable to even write the episodes for the second half of Season 5 until he knows what Costner's participation will be, leaving the entire show up in the air,

Puck News reports that Sheridan has considered killing off the character of John Dutton several times over the years as his battle of wills with Costner has continued, since other characters have become established breakout stars in their own right.

Costner's team tells a different story altogether.

“The idea that Kevin was only willing to work one week on the second half of Season 5 of Yellowstone is an absolute lie,” Costner's attorney, Marty Singer, tells Puck News. “It’s ridiculous — and anyone suggesting it shouldn’t be believed for one second. As everyone who knows anything about Kevin is well aware, he is incredibly passionate about the show and has always gone way above and beyond to ensure its success.”

In light of the new report, it seems likely that the source for the original Deadline article was a network leak designed to lean on Costner by rallying the fans, but will it work? If he and Paramont can still come to terms, we may see him return to Season 5 long enough to wrap his character. If not, his character will likely die offscreen, and Yellowstone Season 5 will return with him gone.

Meanwhile, Deadline also reports that Matthew McConaughey is in negotiations to star in a new Yellowstone spinoff to replace the show with a new show that will also include some of the stars of Yellowstone, which could very well be the long-touted 6666.

As part of Taste of Country's comprehensive coverage of all things Yellowstone, check out more of our Dutton Rules podcast on Apple Podcasts and Spotify.

PICS: See Inside the Historic Texas Ranch Where the New 'Yellowstone: 6666' Spinoff Is Filmed

The massive, historic Texas ranch where the new Yellowstone spinoff Yellowstone: 6666 is filming has sold for just under $200 million, and pictures show a property that is truly part of Texas history.

The 6666 Ranch — better-known as the Four Sixes Ranch — in Guthrie, Texas, dates back to 1870. The ranch centers around a 13-bedroom, 13-bathroom, 13,280-square-foot main residence, which is constructed of quarry rock that was hauled to Guthrie by wagon. The ranch also includes vast, sweeping fenced pastures, farmland, fenced-in pens for cattle, a more recent addition for horses, a water filtration plant that serves the ranch's water needs and more.

There are separate camp manager's homes in both the North Camp and the South Camp of the ranch, which encompasses nearly 225 square miles of land. Yellowstone creator Taylor Sheridan is part of a group of investors who recently acquired the property for $192 million, and he has been shooting his new show out there in recent months.

PICTURES: See Inside Kevin Costner's Spectacular Colorado Ranch

Yellowstone star Kevin Costner lives the ranch life when he's off the set of the hit show, too. The Oscar-winning actor owns a 160-acre ranch in Aspen, Colo., that's a spectacular getaway, complete with a main residence, a lake house and a river house.

The luxury retreat also features a baseball field, a sledding hill, an ice rink, multiple hot tubs and views of the Continental Divide. The ranch property comfortably sleeps 27 people, and it's currently available to rent for 36,000 a night.

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