Ryan Jones has been released back to the region by Wales due to injury, with fellow Osprey James King receiving a call-up in his place.
Jones met up with the squad this morning as they began preparations for the forthcoming RBS 6 Nations and has been ruled out with a hamstring injury picked up in Friday night's defeat in Leinster.King, who made his debut for Wales last summer in Japan, has been called into the squad in his place.
Two further players have been called to train with the national squad. Newport Gwent Dragons hooker Sam Parry and Scarlets second-row Jake Ball will begin training with the squad from tomorrow (Tuesday).