The Premier League will trial the use of permanent concussion substitutes from Saturday, 6 February.
The new rule means up to two permanent substitutions can be made in the event of head injuries, even if all replacements have already been used.
Opposition teams will also be able to make a change at the same time.
The first match of the trial is scheduled to be the 12:30 GMT kick-off between Aston Villa and Arsenal.
It will run until the end of the 2020-21 season but can be extended into the 2021-22 campaign.
The trial will also be held in the Women’s Super League and Women’s Championship from the same date, and in the men’s FA Cup from the fifth round on 9-11 February.
More to follow.