Paddy Jackson and not Ronan O’Gara will be named at out half for Ireland when Declan Kidney names his side to face Scotland this lunchtime.
The 21 year old is uncapped but did impress in a non cap game against Fiji in November.
Keith Earls will start on the wing, Luke Marshall will replace D’Arcy in the centre with Donnacha O’Callaghan taking over from Mike Mc Carthy in the second row and Tom Court likely to replace the suspended Cian Healy in the front row.