Brentford have completed the signing of Seongnam defender Ji-Soo Kim.
The 18-year-old centre-back will join the club's B team, subject to international clearance.
Kim will arrive for the start of pre-season training on Thursday.
Brentford director of football Phil Giles said: Ji-Soo is an excellent prospect who was in demand from many teams in Europe this summer.
He performed very well at the U20 World Cup recently, so it's a great credit to Lee Dykes and the recruitment team that we managed to sign him.
We will give Ji-Soo all the time he needs to learn English, adapt to life in England and grow into our club in the B team, and like all of our B-team players he will earn the opportunity to train and play with the first team based on his performances."