How would “Yellowstone” unfold without Kevin Costner’s character as the series draws to a close?

It all depends on Kevin.

“Yellowstone” co-creator Taylor Sheridan is weighing his options regarding star Kevin Costner — and whether he returns, or doesn’t, to the hit Paramount Network series for its final season, supposedly premiering in November.

“They’ve internally discussed going a couple of different ways with the storyline if Kevin doesn’t return,” an insider told Us Weekly, noting that the series could shift the narrative, at least early on, to the fate of Costner’s character, John Dutton.

“[Taylor Sheridan] could incorporate a big event to explain the disappearance [of Dutton], or there’s a calculative move to protect his family from an enemy.”

Should Costner, 69, not return to “Yellowstone,” the insider told Us that the final episodes will likely “focus on the children and the ranch hands and their relationships, conflicts and alliances.”