They say Son Heung-min's leadership needs to change ㄷ

In particular, differing opinions within the squad regarding Son Heung-min's leadership were mentioned as the background for the retirement rumors. Citing an official well-versed in the national team's internal affairs, SBS reported that discussions regarding retirement have emerged from the position that a change is needed in the leadership of Son Heung-min, who has served as captain for nine years.
It seems like Kim Min-jae and Hwang Hee-chan might have some grievances with Son Heung-min.