Star Australian flanker Michael Hooper could miss the Pool A decider with Wales on Saturday after being cited over an incident during the crushing 33-13 defeat of England.

The incident concerning the 23-year-old -- who along with fellow back row forward David Pocock were outstanding against England -- took place in the 39th minute when he flung himself into a ruck leading with his shoulder which resulted in just a ticking off by French referee Romain Poite and a penalty being awarded to England when it was deep inside their own 22.

However, the independent Citing Commissioner Steve Hinds decided further action should be taken.