Longtime Cubs assistant general manager Randy Bush is leaving his position to become a senior advisor for the team’s baseball operations department, The Athletic’s Patrick Mooney reports. Bush has been Chicago’s assistant GM since December 2006, and briefly served as the interim GM in between Jim Hendry’s firing in August 2011 and Theo Epstein’s hiring in the 2011-12 offseason.

Bush stayed with the team throughout Epstein’s tenure, and though Jed Hoyer’s first season as the Cubs’ president of baseball operations.