How do concussion substitutes work and can the player come back on the field?
CONCUSSION substitutes were introduced at the start of this year in the Premier League to protect players who suffered head injuries during games but will NOT be at Euro 2020. The FA led the call for the Law to be brought in after growing increasingly concerned at links between football and dementia, but players who are replaced CAN'T come back onto the pitch. 4 David Luiz receives treatment for a head injury in the Premier League  WIN 50,000! Play Dream Team Euros  our FREE fantasy football game  UEFA have approved the use of concussion subs at the Euro Under-21 finals, but the protocol will NOT be in place for the senior tournament. Just one concussion substitute per team is permitted at the Euro Under-21 finals, different to the rules in the Premier League. The Premier League concussion substitute law allows each team to make two permanent concussion substitutes if players have head injuries, assessed by qualified medics. 4 The Premier League trial of concussion substitutes began on February 6 2021 during Matchweek 23  4 Sheffield United's Enda Stevens receives treatment for a head injury  If a player shows no clear signs of concussion they will be allowed to continue, but will be continually monitored by medics on the sidelines. The player will then undergo a formal clinical assessment at half time or full time to find out the extent of the injury. The opposing team is also allowed to make an additional substitution if a concussion substitute comes on to avoid one side gaining an advantage through fresher legs. Most read in Euro 2020 Live Blog UKRAINE 2 N MACEDONIA 1 Yarmolenko and Yaremchuk goals enough for vital Euro 2020 win SIMON SAYS Denmark hero Kjaer releases first touching statement since helping save Eriksen back from the brink Eriksen's X-rated first words after his dramatic resuscitation revealed Feature JUVE DONE IT BEFORE! How Ronaldo made millions from junk food deals... including Coca-Cola Pictured HEID 'N PEEK Heidi Klum shows support for Germany at Euro 2020 with cheeky Insta post Live Blog ERIKSEN UPDATES Eriksen gives thumbs up in first pic, Schmeichel speaks on Uefa's handling  The Premier League was the first league in the world to begin trials for concussion substitutes. The trial lasted until the end of the 2020/21 Premier League season, but can continue into the next campaign.