Rumors of the '96-born players retiring.

Let's be honest. Rather than being called up to the national team and losing their spot in their club teams, or getting criticized even if they don't come... they just want to live their lives comfortably. You probably know that when Son Heung-min was young, Son Woong-jung used to cause trouble with the national team coaching staff at the airport.
Right now, the Korean national football team is not a glory, but a poisoned chalice. Even the players feel that way.