It has already been a rather busy summer at Celtic thus far.
Portuguese winger Jota recently departed the club, although the arrivals of Odin Thiago Holm and Marco Tilio, combined with a new contract for Kyogo, have somewhat softened the blow.
Two in the door already, it is certain Celtic will add more before the end of August and one of those could be South Korean winger Hyun-jun Yang.
According to Sky Sports journalist Anthony Joseph on Twitter, the Hoops are stepping up their efforts to sign the Gangwon FC wide man.

Celtic fans inside the stadium before the match Action Images via Reuters/Lee Smith
It is said that an approach was made last month, but the club are not willing to sell the player midway through the season.
Nevertheless, Yang wants the move and has told club chiefs this.
It will be interesting to see how this situation unfolds.
Yang clearly wants to come to Celtic, although his current club continually denying him the opportunity to do so is rather harsh and will lead to more frustration in the player.
If he does eventually depart his homeland, though, Celtic will be getting one of the hottest prospects in South Korea to add to their ranks.