I know this will be an extremely unpopular comment but soccer, unlike football, can save itself from future generations of kids not playing because of what is being learned from head injuries and CTE. Sub-concussive hits apply to the head most times a player heads the ball (or when he misses and collides heads with an opponent). IMO, ban the act. Teams will adjust...
https://www.yahoo.com/sports/fifa-world-cup-teams-continue-ignore-concussions-170836604.html
Eh...no, that's bs and overblown media stuff for clicks. How many soccer players in later age really suffer similar to football players (or boxers, or whatever)? Yeah, none...this is dumb.
The dudes that get KO'd (like that Moroccan guy the other day), sure...hold them out and put them through some proper concussion protocol. But heading the ball...yeah, no, this is stupid.