Defensive issues for Celtic
Celtic resume domestic duties against Dundee later this week but have further injury concerns.
Defender Jozo Simunovic picked up a hamstring problem ruling him out of Bosnia-Herzegovina's World Cup qualifiers against Belgium and Estonia.
Meanwhile, full-back Mikael Lustig also suffered a knock prior to Sweden's meetings with Luxembourg and Holland.
The Hoops have already been without Danish centre-back Erik Sviatchenko since early August due to a knee injury, although at least fellow stopper Dedryck Boyata has lately returned from a similar complaint.
Brendan Rodgers' side have a big forthcoming Champions League visit to Bayern Munich in just ten days time.