Celtic midfielder Joe Ledley has been ruled out of this afternoon's tie with Dundee United at Tannadice.
The Welsh international picked up an ankle knock in the Europa League defeat to Atletico Madrid, and revealed on his Twitter account that he is awaiting the results of a scan.
Hoops boss Neil Lennon hopes to have Victor Wanyama available, while Badr El-Kaddouri is back after he was cup-tied for the Europa League.
Celtic could move to within four points of leaders Rangers with victory this afternoon.