Injured All Blacks winger Clarke to miss part of Rugby Championship

New Zealand winger Caleb Clarke may be sidelined for up to eight weeks with his high ankle injury and stands to miss at least part of the Rugby Championship.

Clarke was ruled out of the rest of the France series on the eve of the second match in Wellington on Saturday but All Blacks coach Scott Robertson said he could miss further tests.

"He could be probably six to eight (weeks). It is a good ankle injury," Robertson told reporters on Monday.

"Shame for him. Really gutted."

The All Blacks play their first two Rugby Championship matches against Argentina in Cordoba and Buenos Aires on August 16 and 23.

Clarke was replaced in Robertson's starting 15 in Wellington by Emoni Narawi. The All Blacks thrashed the French 43-17 to seal the series and make the third match in Hamilton on Saturday a dead rubber.

Clarke was originally named in the second test team as a replacement for the concussed Sevu Reece. The Fiji-born winger is now available for Hamilton after clearing concussion protocols.

Robertson will be without Tupou Vaa'i, though, after the lock-turned-flanker suffered a head knock in the second half in Wellington and later failed a concussion test.

Vaa'i, who started in the number six shirt in the first two tests in a rejigged back row, had been in good form, scoring a try in each match.

Loose forward Luke Jacobson will be a potential replacement after recovering from injury, while prop Tyrel Lomax is also available after missing the first two tests.

With the series sewn up, Robertson has the luxury of giving fringe players a run and mooted picking anyone fit in his 33-man squad who were overlooked for the first tests.

That could mean game-time for prop George Bower, hooker Brodie McAlister, halfback Noah Hotham, fullback Ruben