Anton Lienert-Brown has been ruled out of the All Blacks final test of the year against France in Paris this weekend.
The Chiefs midfielder started at second five-eighth in the 29-20 defeat to Ireland, leaving the field just before half time after suffering a partial dislocated shoulder injury.
All Blacks coach Ian Foster, after arriving in Paris, confirmed Lienert-Brown is in a sling and not in contention for the French test.
Foster is also sweating on Beauden Barrett's recovery after he took a head knock and failed his HIA 21 minutes into the Dublin defeat.
The All Blacks have adopted a cautious approach to head knocks this year and with Barrett now needing to satisfy the independent concussion process, it seems unlikely he will feature this weekend which would hand Richie Mo'unga the chance to start at No 10.