Boyer was cut loose by the Royals on Wednesday, Rustin Dodd of The Athletic reports.
Boyer will look for a new home after recently returning from the 60-day DL (back). He has been limited to just 21.2 innings of work in the big leagues this season, logging an unsightly 12.05 ERA and 2.08 WHIP. In a corresponding move, Jorge Lopez was called up from Triple-A Omaha.