In 2012, he moved to the United States and enrolled at the
University of Illinois-Chicago. In 2014, he transferred to
Holy Cross College, where he began playing college soccer. In November 2014, he earned
CCAC Men's Soccer Offensive Player of the Week honours. At the end of the 2014 season, he was named to the All-CCAC Second Team. At the end of the 2015 season, Son was named to the All-CCAC First Team and the
NAIA Men's All-Mideast Region First Team. ==Club career==