Premier League's reputation 'on the line' over concussion protocol

Leeds defender Robin Koch sustained a blow to the head in Sunday's defeat to Manchester United

Leeds defender Robin Koch reacts after receiving medication following a collision with Manchester United's Scottish midfielder Scott McTominay in Sunday's Premier League game at Elland Road.  Picture: Paul Ellis/AFP via Getty Images

Brain injury charity Headway said the Premier League's reputation was "on the line" as it claimed protocol was not followed when Leeds' Robin Koch sustained a blow to the head in Sunday's defeat to Manchester United.

Headway said "enough is enough" and demanded answers from league bosses after Koch was allowed to play on at Elland Road after suffering a head injury in a collision with Scott McTominay.