Brain injury charity Headway has demanded action from UEFA after Switzerland defender Fabian Schar was allowed to play on having suffered a concussion.
The Newcastle United star was knocked unconscious as he clashed heads with Jemal Tabidze early in Saturday's Euro 2020 qualifier against Georgia in Tbilisi.
Despite requiring treatment for an extended period, during which time Jano Ananidze reportedly prevented Schar from swallowing his tongue, the defender was permitted to continue playing.
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Schar had a key role in both goals in a 2-0 win, but Headway is furious that an "incredibly dangerous" risk was taken with the player's wellbeing.