Soccer-PFA calls for temporary concussion substitutes after Koch injury

Soccer Football - Premier League - Leeds United v Manchester United - Elland Road, Leeds, Britain - February 20, 2022 Leeds United's Robin Koch changes his shirt after receiving treatment for a head injury Action Images via Reuters/Lee Smith

(Reuters) -The Professional Footballers' Association (PFA) has called for the introduction of temporary concussion substitutes following a head injury suffered by Leeds United's Robin Koch in Sunday's 4-2 Premier League defeat by Manchester United.

Defender Koch was left bloodied after a clash of heads with Scott McTominay early in the match and continued to play on with heavy bandaging before being substituted in the 31st minute.