DUBLIN (Reuters) -Ireland flanker Ryan Baird will be out for up to three months with a leg injury and utility back Jamie Osborne will miss four months due to a shoulder problem, making both major doubts for the Six Nations.

Baird, one of Ireland's bright spots in a mixed series of Autumn tests, suffered a suspected fractured tibia in Saturday's bruising loss to South Africa, coach Andy Farrell said, and Osborne was injured against Japan this month.