Stephen Ferris is a major doubt for Ireland's Six Nations clash with Scotland after being left out of a 31-man squad for Ulster's trip to the Scarlets tomorrow night.
The Ireland management have decided that, having undergone a further scan on his injured left knee, Ferris will receive further treatment, instead of playing for his province.
It's now unlikely that he will feature in Sunday week's trip to Murrayfield, but he could be in the mix for the game against Wales the following week.
Hooker Rory Best is also absent for Ulster, but coach Brian McLaughlin has the rest of his Ireland contingent available.
Andrew Trimble will be on the right wing and Craig Gilroy on the left with Simon Danielli rested.
It is planned to start Paddy Wallace at inside-centre; he may switch to out-half if Ian Humphreys fails to recover from a shoulder injury. Ruan Pienaar and youngster Paddy Jackson are further options at No 10.
Centre Darren Cave, out of action due to injury since November, is set to return for Ulster 'A' next week.