Jamie Cudmore will not feature against Ireland in Saturday's final leg of the North American tour as the veteran Canadian lock has not recovered from the broken hand that ruled him out of ASM Clermont Auvergne's Top 14 semi-final defeat to eventual French champions Castres.
There are four Irish injury concerns following Saturday's narrow 15-12 victory over the USA in Houston but it's hoped that Fergus McFadden (head stitches, neck), captain Peter O'Mahony (elbow), Connacht fullback Robbie Henshaw (shoulder) and Chris Henry (gash above eye) will resume training on Thursday.
Henshaw, who turns 20 tomorrow, got a stinger in his left shoulder having come off second best in an aerial collision with American lock Brian Doyle. He will be monitored this week with Felix Jones the only fullback alternative now Simon Zebo has joined the British and Irish Lions in Australia.
No replacement has been called up by Ireland with Andrew Trimble poised to come in for his fiftieth cap.
Canadian coach Kieran Crowley (All Black No. 848) can call on overseas professionals like former London Irish flanker Jebb Sinclair and Australian born Bedford Blues fullback James Pritchard.
Both featured prominently in Saturday’s cantankerous 36-22 defeat of Tonga in Ottawa but Glasgow winger DTH van der Merwe is unavailable.