Celtic defender Daniel Majstorovic has been ruled out for up to six weeks with a fractured cheekbone.
The Sweden international suffered the injury in Celtic’s 2-0 win over St Johnstone on Sunday.
“Daniel Majstorovic underwent surgery yesterday, on the fractured cheekbone he suffered in the 2-0 win against St Johnstone on Sunday,” read a club statement.
“The operation went well, but he now faces six weeks on the sidelines before he can return to training.”
This means Hoops manager Neil Lennon will be missing his first choice centre-half until February – missing the upcoming Old Firm derby.
This comes as a further blow to Lennon’s plans as the Celtic Park side have suffered a raft on injuries in the past week.
Striker Anthony Stokes and midfielder Paddy McCourt, who both picked up slight calf strains, along with defender Adam Matthews, who suffered a twisted ankle, will return to training later this week, but are unlikely to face Killie.
It is not all bad news for Lennon regarding injuries though, midfielder Joe Ledley returned to training this week after recovering from an ankle injury and should be fit to face Kilmarnock this weekend.
Saturday’s game against Kilmarnock is the traditional Christmas Eve fixture in Scotland and will take place at Celtic Park.