Complex sentence: New Blue Jays president and CEO Mark Shapiro, who assumed the roles on November 2,2015, announced that Tony LaCava was assigned as the interim general manager and that John Gibbons would remain as the manager.
Split into simpler sentences: New Blue Jays president and CEO Mark Shapiro, who assumed the roles on November 2,2015, announced that Tony LaCava was named interim general manager. He also announced that John Gibbons would remain as the manager.