"A player removed from a game due to injury must sit out the rest of that drive. If the team trainers and doctors clear a player to return on that drive, a team can use a timeout to “buy” that player back into the game if they’ve sat out at least one play. The rule would not apply to players injured by a hit that results in a penalty."
"The biggest pushback from coaches concerns quarterbacks. What if they have to come out of a late drive due to a cramp and their team is out of timeouts? It’s a huge personnel loss.
That’s where another idea comes in: to handle differently the “green dot” player — the one player on the field with a coach-to-player helmet communication, typically the quarterback and one defensive player. Perhaps they would only have to sit out one play if they’re cleared to return."
