The Premier League has said it hopes to start permanent concussion substitution trials from January.
It follows the International Football Association Board’s (IFAB) approval of trials in the new year.
The new rule means permanent substitutions can be made if a player suffers a head injury, even if all replacements have already been used.
To avoid potential abuse of the rule, opposition teams will also be able to make a change at the same time.
More to follow.