HBO is recasting the lead of its pilot about the 1980s Los Angeles Lakers. John C. Reilly has been tapped to play Jerry Buss. He replaces Michael Shannon who was originally cast in the role but exited due to creative differences.

Buss was majority owner of the Lakers during the team’s Showtime era chronicled in the Untitled Showtime Lakers Project (fka Showtime), executive produced by Adam McKay who is directing the pilot.

Written by Max Borenstein, the project is based on Jeff Pearlman’s nonfiction book Showtime: Magic, Kareem, Riley, and the Los Angeles Lakers Dynasty of the 1980s. It follows the professional and personal lives of the 1980s Lakers, one of sports’ most revered and dominant dynasties — a team that won five NBA titles and defined its era, both on and off the court.