Paris Saint-Germain have signed Korean international Lee Kang-in from Real Mallorca, the Ligue 1 champions announced on Saturday. The 22-year-old becomes PSG's fourth signing of the close season. "It's incredible to be able to join Paris Saint-Germain, it's one of the biggest clubs in the world, with some of the greatest players in the world," said Lee in a statement. Lee made his first-team breakthrough at Valencia as a winger after coming through the club's academy, but can also play more centrally.