The following rules must be observed when substituting players:
The referee must be informed before the substitution is made; the substitute may not enter the field of play until the player being substituted has left the field of play and the referee has given the signal;
The substitute may only enter the field of play in added time from the halfway line;
The substitute then becomes a player on the field of play and the substituted player is no longer a player on the field of play;
The substitute may not play in the match again. The referee has the right to exercise his authority over all substitutes, whether they are playing or not.
Change of goalkeeper:
Any player on the field of play may change places with the goalkeeper, provided that the referee is informed before the change of place is made; the change of place is made during stoppage of play.
Specification:
Name: 2-digit double-sided substitution card.
Material: PVC
Colour: Black
Weight: 1.45kg
Size: 45 * 39 * 2cm/17.71 * 15.35 * 0.78inch
Package:
1 x Football Replacement Card
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.