Award a penalty kick and caution the defending player
Where a player commits an offence against an opponent within their own penalty area which denies an opponent an obvious goal-scoring opportunity and the referee awards a penalty kick, the offending player is cautioned unless:
The offence is holding, pulling or pushing or
The offending player does not attempt to play the ball or there is no possibility for the player making the challenge to play the ball or
The offence is one which is punishable by a red card wherever it occurs on the field of play (e.g. serious foul play, violent conduct etc.)
In all the above circumstances the player is sent off.