Who is Choi Sang Kuk? I have a player sticker of him, but it doesn't identify him other than playing for the Republic of Korea. He's wearing a national team jersey in the picture. Was he on a World Cup squad?
The only player in Korea that resembles his name and is a star is Choi Sung-Kook... he's one of the main stars for Korea U-20 team which will compete in the World Youth Championship the in coming month (he's probably wearing #10 in that picture of yours right?). He's short, but speedy, agile and masterful with his dribbling. A good, up and coming player.
I really don't think it's him. This is an old sticker, maybe from 1986 or 1990. I've checked the Korea rosters for both those World Cups, and didn't see his name.