Ryan Jack in line to face Celtic, despite operation date
Aberdeen skipper Ryan Jack could still face Celtic on Saturday, despite being booked in for a knee operation on Tuesday.
But midfielder Peter Pawlett is definitely out of the Ladbrokes Premiership clash at Parkhead with a groin strain.
Callum Morris is back in contention, though, after stepping up his recovery from an Achilles problem. Jonny Hayes (hamstring) remains on the sidelines.