Upside for upside, a true challenge trade for two flawed players. The Red Sox bring in Madrigal, who gives them a needed depth option up the middle and could be interesting in Boston if he ever figured out how to bang doubles off the Green Monster (good luck). Duran would give the Cubs another lefty outfield option who would have time to adjust to another system and see if he could find success. Duran has the lefty power/speed combo that the Cubs still lack on their roster.