Sending a player off before a match was much earlier than you said, as from what I understand and remember is if referee has send off a player (before the match started), they can be substituted for another player but they cannot be used as a substitute player during the game. A player who is sent off: before submission of the team list can not be named on the team list in any capacity after being named on the team list and before kick-off may be replaced by a named substitute, who can not be replaced; the number of substitutions the team can make is not reduced