CELTIC skipper Callum McGregor has been ruled out until after the World Cup break.

Ange Postecoglou has confirmed that the Hoops captain will be out of action until after the mid-season pause.

The Scotland international suffered a knee injury after a 50-50 tackle against RB Leipzig midweek in the Champions League. 

Postecoglou initially reported that it didn't look great for the 29-year-old.

On Friday he was sent to visit a specialist in London to get a full gauge on the extent of his injury.

Now, Postecoglou has revealed that Celtic will be without their skipper for around a month.

He told Sky Sports: "It looks like he'll miss the next three or four weeks which would put him out until after the break."