The game's lawmakers have rejected a temporary concussion substitute trial in the Premier League and two other competitions next season, a move which has been criticised by players' unions, leagues and campaigners.Here, the PA news agency looks at the key issues.What's the background to this? World players' union FIFPRO has been calling for a trial of temporary concussion substitutes for the best part of a decade.
#united-states #premier-league #possibility #competitions #campaigners #major-league-soccer #greater-risk #footballers #head-injury #concussions
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