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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Dynamo Kyiv 
Obolon-Brovar Kyiv 
FC Porto 
Famalicao 
Bordeaux 
Valenciennes 
Espanyol 
Getafe 
Akron Togliatti 
Spartak Moscow 
Rayo Vallecano 
Valencia 
FC Heidenheim 
Bayern Munich 
FSV Mainz 05 
VFL Wolfsburg 
Werder Bremen 
VFL Bochum 
Everton 
Manchester City 
Lokomotiv Moscow 
Nizhny Novgorod 
Barcelona 
Celta Vigo 
Paris Saint Germain 
LE Havre 
Shakhtar Donetsk 
Kolos Kovalivka 
Monza 
Napoli 
Stade Briochin 
Monaco 
Strasbourg 
Clermont Foot 63 
Roma 
Verona 
Las Palmas 
Atletico Madrid 
Marseille 
Montpellier 
Vitoria Guimaraes 
Benfica 
Utrecht 
Ajax 
Fulham 
Chelsea 
Ipswich 
Arsenal 
Manchester Utd 
Wolverhampton 
FC Augsburg 
Eintracht Frankfurt 
ST Johnstone 
Celtic 
Leicester 
Liverpool 
Borussia Dortmund 
Borussia Monchengladbach