Crocked Tom Rogic is a major doubt for Celtic with their crucial showdown with Rangers just around the corner.
The midfielder limped off in the Premiership win over Ross County after a crunching tackle from Staggies defender Kayne Ramsay.
Rogic had hoped to recover in time for Australia's crucial World Cup qualifying double header with Japan and Saudi Arabia but was forced to drop out of the squad with an ankle knock.
Ange Postecoglou admits the 29-year-old will miss training with the injury before a second look in the run up to the derby day clash.
Speaking to Celtic TV about the injury, the Celtic boss said: “We’ll see how it all transpires.
"Unfortunately he couldn’t go back and represent his country which was disappointing for him. He’s still sore.
"He probably won’t train this week and we’ll just assess how he goes in the week leading up to the next game.
“But suffice to say he was pretty sore after it. He probably could’ve been a helluva lot worse, but at the same time it’s enough to keep him out for the medium-term.”
