Before college, Manley featured for two seasons at Mount Saint Joseph High School in Baltimore, Maryland.
[1] Manley attended Duke University, where he played college soccer for four years between 2014 and 2017, making 58 appearances, scoring 1 goal and tallying 12 assists.
[7][8] He made his league debut for the club on August 15, 2018, coming on as a 79th-minute substitute for Matt Thomas in a 3–1 away defeat to Orange County SC.
[9] In April 2019, Manley was loaned out once again, this time to Minnesota's USL affiliate club Forward Madison FC.
[10] he made his league debut for the club on April 6, 2019, playing all ninety minutes in a 1–0 away defeat to Chattanooga Red Wolves.