The news is a big blow to the Crusaders, who have already started the season with two losses from three and are missing several other key players through injury.
The Crusaders also confirmed lock Mitch Dunshea will miss the rest of the season after needing surgery for a torn pectoral muscle, while No 8 Cullen Grace is out for six weeks with a collarbone injury.
It adds to the growing casualty ward for coach Scott Robertson, including prop Oli Jager (neck), midfielder Jack Goodhue (groin), hooker George Bell (turf toe) and fullback Will Jordan (migraine-related condition).
They are also sweating on the fitness of David Havili, who was spotted in a left arm sling after last weekend’s 25-24 defeat to the Drua.
Meanwhile, All Blacks and Chiefs midfielder Anton Lienert-Brown is set to miss a further month of the season after sustaining a high ankle sprain against the Crusaders in round one.
Lienert-Brown’s recovery from the injury, initially expected to see him miss three games, has been slower than expected and means he will be sidelined at least until after the Chiefs’ bye in round seven.