Think this is a great idea. They've decided it will be a club policy to play to the whistle and have emailed other clubs to tell them this in advance:
https://www.bristolpost.co.uk/sport/football/football-news/bristol-city-written-every-club-3174864
"Bristol City have taken the unusual step of writing to every other club in the Championship to explain that they will not kick the ball out of play, unless a player has suffered a genuine head injury. Head coach Lee Johnson revealed the decision, as he answered questions following the Robins' 3-1 defeat to Leeds United on Sunday."
https://www.bristolpost.co.uk/sport/football/football-news/bristol-city-written-every-club-3174864
"Bristol City have taken the unusual step of writing to every other club in the Championship to explain that they will not kick the ball out of play, unless a player has suffered a genuine head injury. Head coach Lee Johnson revealed the decision, as he answered questions following the Robins' 3-1 defeat to Leeds United on Sunday."