After playing Sean Reagan on 14 seasons of Blue Bloods, Andrew Terraciano opened up about how he found out that his beloved role was recast in the Boston Blue spinoff. "I had somebody call me - actually the day that I was graduating - and they had spoken to my mom and she called me [crying]," Terraciano, 22, exclusively told Us Weekly. "They were like, 'They might be looking for a different Sean.'" Terraciano subsequently spoke to Donnie Wahlberg, who played his onscreen dad. "Shortly after we got the news, Donnie called me.