Reallocating their minor-league depth and addressing reliever options is a clear priority for the Chicago Cubs’ trade deadline needs. After acquiring right-hander José Cuas from the Kansas City Royals Monday for outfielder Nelson Velázquez, the Cubs tapped into their minor-league arms for another pitcher. The Cubs traded right-handers Adrian Sampson and Manuel Rodríguez and international bonus pool space to the Tampa Bay Rays for right-hander Josh Roberson ahead of Tuesday’s 5 p.m.