Striker who joined Borrussian Dortmund in 2014 after spending three years with Sunderland. He became a member of the South Korean national team in 2010.
He debuted professionally for the Chunnam Dragons in 2010.
He competed for the South Korean U20 and U23 teams before receiving his call-up to the senior national squad.
He was born in Jeju, South Korea.
He and Lee Bum-young became teammates on the South Korean national team.