Socceroo Tom Rogic has been ruled out of Celtic's upcoming Champions League qualifier against FK Sarajevo on July 10.
The Australian remains sidelined with an ankle injury he picked up in the Scottish Cup final and hasn't travelled with the Hoops to Switzerland for pre-season.
"Tom is not here. He picked up an ankle injury in the cup final and we knew he would be three to four weeks anyway," Celtic manager Neil Lennon said.
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"We are hoping that by the time we get back Tom will be back on the training ground.