The bullpen is among many needs the Cubs have to address this offseason, and they should really be looking to add a southpaw or two. As of this point, their only move has been to sign lefty Edwin Escobar to a minor-league deal after he spent several years in Japan. They also chose to non-tender Brandon Hughes, who had been their only left-handed reliever when he was healthy. If Jed Hoyer would like to make upgrades to the arm barn, he’d better get to it before all the horses are out.