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Shin, having spent his youth career at Sungkyunkwan University, entered the 2011 K-League draft intake, and was selected by Suwon Bluewings for the 2011 season.
Yun entered professional football as a teenager, being selected by Gyeongnam FC as part of their squad for the 2011 season, having spent his youth career with Gyeongnam's U-18 side.