 He began the 2017 season with Tampa and was promoted to the Trenton Thunder of the Class AA Eastern League in July.On July 18, 2017, the Yankees traded Polo, Tyler Clippard, Blake Rutherford, and Ian Clarkin to the Chicago White Sox for David Robertson, Todd Frazier, and Tommy Kahnle.The White Sox assigned him to the Birmingham Barons of the Class AA Southern League.