Kevin Costner shares details on why he left “Yellowstone” and explains what it would take to return to the show. Get more Howard Stern by signing up for a free SiriusXM trial: sxm.app.link/HSlisten SUBSCRIBE for more videos: bit.ly/2qswmZU Want to know what's going on with Howard Stern in the future? Follow us on Twitter: bit.ly/1RzxGPD On Facebook: on.fb.me/1JELtz3 On Instagram: goo.gl/VsWTND For more great content from the Howard Stern Show visit our official website: HowardStern.com #HowardStern #SternShow