London - England lock Geoff Parling has been ruled out of Saturday's opening November international against Australia at Twickenham with concussion, team management announced on Tuesday.
Parling was concussed during a training session at England's training base in Bagshot, south-west of London, earlier Tuesday and will now follow the standard procedure for players who've suffered head injuries.
"Geoff Parling sustained a mild concussion during a contact session this afternoon and will undergo the recommended graduated return to play protocol," said England coach Stuart Lancaster in a Rugby Football Union statement.
"As such, he will be unavailable for Saturday's game but will stay in camp with a view to returning to training next week."