Derrymen James Mc Clean and Eunan O'Kane have sat out training with the Irish squad today.
Mc CLean has a slight back problem while O'Kane has a groin strain.
Kevin Doyle has been rested due to his long flight from Colorado.
John O'Shea will join up with the squad latter but is struggling with a hamstring problem.
Martin O'Neill's side are preparing for Saturdays World cup qualifier with Austria in Vienna.