"In the interests of player welfare, some competitions also allow each team to make an additional permanent concussion substitution when a player has concussion or suspected concussion. Making a concussion substitution does not affect the team’s number of ‘normal substitutions’ (or substitution opportunities) but the other team gets an extra ‘normal substitution’ (and substitution opportunity)."

Ciekawe, byłem pewien że tylko drużyna z urazem dostaje dodatkową zmianę.

https://www.footballrules.com/game-events/substitutes/