This is a completely unnecessary additional rule to "solve" a problem that can be fixed by enforcing existing rules. We already have VAR, we already have video evidence, so any obvious fake head injury should be dealt with retrospectively.As said above a 3 min concussion protocol solves the issue… the player doesn’t get a choice in the matter … the ref just sends them to the sidelines… then you solve the issue of playing an injury down to stay on.
Keepers would be different… keep it the same protocol but you can have a ‘concussion sub’ if the manager wants to change them back then ok.
It's madness that people keep inventing new ways to deter cheating instead of just enforcing the existing anti cheating rules.
It would be so simple to stamp out cheating altogether by just retrospectively handing out severe bans for cheating. It would be gone instantly.