Brain injury charity Headway have questioned Aston Villa's handling of John McGinn's head injury, with the midfielder set to miss their Carabao Cup clash with Chelsea due to concussion.
McGinn was a 40th-minute concussion substitute in Villa's 3-0 win over Everton on Saturday, with manager Dean Smith saying the Scotland star told staff he felt dizzy during the game.
Headway chief executive Peter McCabe said in the case of head injuries, players should not be allowed to determine whether they can play on, and that temporary concussion substitutes — when a player is replaced for 10 minutes while he is assessed in private — should be introduced.