CLOUDS GATHER ON COSTNER'S HORIZON!

Yellowstone return is only hope - but horse has left barn!

KNOCKED off his high horse by savage reviews of his bigbudget passion project Horizon: An American Saga, sources say a crushed and contrite Kevin Costner is considering crawling back to Yellowstone in a desperate attempt to salvage his career and bank account!

The Dances with Wolves Oscar winner is facing a HUGE failure after Horizon — the first film in a bloated four-part series — garnered a catastrophically low 29 percent score on Rotten Tomatoes and was scorched by critics.

One reviewer called the film “baffling … with half-formed characters and NO discernible structure.”

The 69-year-old actor was so confident of the series’ success he reportedly sunk $38 million of his own money into it and he walked out on the massively successful Yellowstone series amid a bitter feud with creator Taylor Sheridan.