Celtic captain Scott Brown could be out for up to six weeks, his manager Neil Lennon has confirmed.
Brown underwent surgery on an abductor muscle over the international break and he is joined on the sidelines by Thomas Rogne and James Forrest.
"Scott Brown had surgery in the break and so he is looking at a month, four to six weeks [out].
"Thomas Rogne has a hamstring strain and he will out for two to three weeks, and James Forrest is continuing his rehab at the minute."
Celtic travel to St Mirren in the SPL on Sunday afternoon.
