Celtic could be without both Kris Commons and Mikael Lustig for their Europa League tie against Inter Milan later this month.
Swedish full-back Lustig is almost certain to miss the last-32 tie after being ruled out for a month with an ankle injury sustained in the Scottish Cup win over Dundee United at the weekend.
Bhoys manager Ronny Deila is more optimistic that Commons, who recently signed a new two-year contract at Parkhead, could be involved against the Italian giants as he nurses a thigh strain.
"Kris Commons has pulled a [thigh] muscle but hopefully it will be one to two weeks," Deila is quoted as saying by BBC Sport. "It could be much worse. He can be [fit for Inter]."
He added: "It's more serious for Mikael, it may be three to four weeks."
The Scottish champions host the first leg on February 19 and then travel to Milan for the return a week later.
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