Leicester Tigers lock Geoff Parling has been ruled out of England's international Test with Australia at the weekend due to a concussion.
The 30-year-old, who represented the British and Irish Lions during their tour Down Under in the summer, was concussed during a training session at the Red Rose's training base in Bagshot which has resulted in him being forced to miss Saturday's fixture due to standard procedures to treat head problems.
"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."
England host Australia at Twickenham on Saturday.
