Glenn Loovens and Shaun Maloney are doubts for the first leg of Celtic's Champions League play-off against Arsenal at Parkhead.
The Dutch defender was replaced after 50 minutes of Saturday's Clydesdale Bank Premier League win at Aberdeen after going down with a niggling knee injury while Maloney limped off near the end with a knock and both will be assessed on Tuesday.
Gary Caldwell will return to the Hoops defence after being suspended for the trip to Pittodrie.
Provisional squad: Boruc, Hinkel, Naylor, Caldwell, Fox, O'Dea, Loovens, Scott Brown, N'Guemo, Donati, McGeady, McDonald, Samaras, Fortune, Killen, Maloney, Zaluska, Crosas, Caddis, Ferry.
Source: Daily_Mail