Canterbury back Colin Slade is preparing for another spell on the sidelines after injuring his knee in Saturday's loss to Wellington.
Slade was left clutching his left knee after a John Schwalger tackle and required a scan to determine how badly his medial ligament has been damaged.
The All Black has suffered a badly broken leg, two broken jaws and a serious groin injury inside the past two-and-a-half years but Canterbury coach Scott Robertson is hopeful that he will return before the end of the ITM Cup in October.
"It's not been done in true Colin Slade style where it's off to surgery and out for six months but it's a reasonable grade - we are just not sure what level it is," Robertson told Fairfax Media.
A grade-two ligament injury would mean he is sidelined for about four weeks. Any higher and Slade is unlikely to play again this season.
Although he featured at fullback against Wellington, Slade is a recognised fly-half and his call-ups into the All Blacks squad have been as cover for that position.
Specialist pivot Tyler Bleyendaal also left the field with a head knock and must pass the regulation post-concussion routines this week before he can play again but it's unlikely that he will start Canterbury's match against Manawatu on Wednesday.
With Slade, Bleyendaal and Dan Carter all injured, and Tom Taylor on All Black duty, Robertson is set to name 19-year-old Richie Mo'unga at fly-half against the Turbos.
"Richie has now got a great opportunity," Robertson said.
"This will be his fourth game for us on Wednesday. He knows all our moves, has trained with us and will have experience inside and outside of him."