Under this rule, in this season, the captains of the teams can replace any one player from their playing eleven in the middle of the match with the player sitting on the bench.
Teams will also have to tell 4-4 substitute players along with playing-11 after the toss.
Any one of these 4 will be able to replace the player involved in the playing-11 in the middle of the match.
A team will be able to use the player replacement rule only once in the entire match.