Fiji born and former All Blacks wing Sitiveni Sivivatu is out for four months after a disastrous start with his new French club.
After three years with Clermont, Sivivatu moved to Castres in the off-season, but he injured a shoulder in Castres final pre-season game with Brive.
Specialist advice has confirmed he now needs surgery, meaning he will be out for a long time.
Meanwhile in the Rugby Championship, the All Blacks face the Wallabies at 10.05pm this Saturday while the Springboks face Argentina at 3.05am Sunday.
Stay tuned for the latest news on our radio stations