Peter Murphy and Peter Gallagher are going back to the Pet Hospital in Cardiff for some more medical tests.
After a two-week absence due to a hamstring injury, Gallagher is now fit to return to the field for the first time since his return from an ankle injury.
Gallagher, 26, played in last week’s defeat by Leeds and is set to make his debut against Hull City on Saturday.
Gallagh has also returned to training this week and has made a handful of changes to the side he replaced, with Tom Davies returning to the centre-half spot, while Jake Kean and Aaron Cresswell have been named in the side.
Injury: Gallagher (hamstring), Murphy (ankle), Davies (foot), Kean (knee), Cressway (knees)Captain: Murphy (36 caps)Head to head: Gallagher vs Murphy (Wales)Wales 2-1 Hull City