when do you do a drop ball in soccer
Dropped-ball The ball is dropped by the referee at the point where the ball was when play was stopped, unless this is within a goal area in which case it is dropped on the goal area line parallel to the goal line. The ball becomes in play as soon as it touches the ground. Players must not touch the ball until it has touched the ground. If the ball leaves the field of play before it has been touched by a player, the drop-ball is retaken.[1]
Corner kick When taking a corner kick, the ball is initially placed so that at least some part of the ball is within the corner arc closest to where the ball went out of play. The corner arc is located at the intersection of the goalline and touchline and has a radius of one yard. All defending players must be at least ten yards (9.15 metres) from the corner arc until the corner kick is taken. A corner kick is taken as soon as the ball is kicked and moves.