Jared Payne and Simon Zebo are potential replacements at 15
Rob Kearney is an injury concern for Ireland's upcoming Six Nations clash with Italy this Saturday.
The full-back sat out training this morning because of a hamstring injury, which could force head coach Joe Schmidt to make further changes to his back-line.
If Kearney isn't deemed fit enough to start, Simon Zebo or Jared Payne are potential replacements for him at 15.
Zebo started the match against Wales, whereas Payne's Ireland career thus far has found him fielded at outside centre.
Meanwhile, scrum-half Eoin Reddan also missed training today but Munster flanker Tommy O'Donnell did take part.