Gu Sung-yun (Korean: 구성윤, born 27 June 1994) is a South Korean professional footballer who plays as a goalkeeper for Korean club Gimcheon Sangmu (army). He also played for the South Korea National Under-23 team.
Club Career
On 29 May 2020, Gu signed for K League 1 club Daegu. In an interview he expressed that he was happy signing for Daegu.
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