The Dodgers got a 19 year old pitcher and a 18 year old outfielder whom they must have been very high on.

https://wgntv.com/sports/chicago-cubs-postseason/report-cubs-trade-for-top-prospect-michael-busch-relief-pitcher-from-dodgers/#:~:text=He%20is%20the%2044th%20best%20prospect%20in%20baseball,the%20Dodgers%20system%2C%20according%20to%20MLB.com%E2%80%99s%20postseason%20ranking.