A final possibility for a Yellowstone without John Dutton is a quick and easy sendoff. Considering how much controversy is surrounding Costner and his exit, it might be fitting that the series would write off his character in a clear-cut way that answers questions and makes way for the real action. This could be done by simply offering a vague excuse as to why he is gone. While this method may not be the best received by audiences, it could end the drama and speculation fairly quickly and give Yellowstone a chance to shine without Costner. Overall, this would be the quickiest and riskiest route to take.