Jack out for six weeks

Jack was replaced during the second half of a goalless draw at Pittodrie which meant Aberdeen missed the chance to go top of the Scottish Premiership.

And Dons boss Derek McInnes afterwards ruled out his skipper until February at the earliest.

"He's torn his hamstring, and it doesn't look great," McInnes said. "At the bare minimum I would think he'll be out for six weeks and possibly more."