Inter Milan will be keeping a close eye on Song this summer.
The Serie A side have reportedly been tracking the young defender all season and could snap him up if he impresses on the big stage.
Already hero worshipped back in South Korea, he is considered the most promising talent in the squad.
He is waiting in the wings as the long-term replacement for Hong Myung-Bo, who is expected to retire this summer.
The 23-year-old looks equally at ease holding together the back four or launching a fresh Korean attack.