Emilio Izaguirre has been ruled out for six weeks with a hamstring injury and will miss Celtic's Champions League Group G clash with Barcelona at Parkhead on Wednesday night.
The Hoops left-back came off during the 2-2 Clydesdale Bank Premier League draw with Dundee United at Tannadice on Sunday and Thomas Rogne is out for two weeks with a calf complaint picked up in the same game.
Winger James Forrest (hamstring) and strikers Gary Hooper (hamstring), Lassad (groin) and Georgios Samaras (ankle) missed the trip to Tayside and only the latter has a chance of making the game against the Catalan giants.
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