Scott Brown a doubt for Scotland's game against England

Celtic captain Scott Brown is a doubt for Scotland's World Cup qualifier against England at Wembley on Friday night.

The Hoops midfielder, who came out of retirement to help the Scots' ailing qualification hopes, came off with a numb foot just after the hour mark of Celtic's 3-0 win over Inverness at Celtic Park.

Afterwards, Hoops boss Brendan Rodgers said: "It is a sore one because even if he does get knocked, he doesn't come off easy, so we will have to wait and see how that is.

"You know when he comes off it is a sore one. I haven't seen him for so long afterwards, but we will know in the next 24 hours.

"I am sure he will [report to Scotland]. I don't think there is anything to stop him. [He will] probably need to assess that over the next couple of days. The medical team here or at Scotland will decide whether he is fit to play or not."

Rodgers was happy to single out Stuart Armstrong after his man-of-the-match performance against Caley Thistle.

The midfielder had to slot in at right-back after an injury to Mikel Lustig and Rodgers was more then happy with the way he adapted.

"The Blond Cafu!" he said. "He was up and down that wing, wasn't he? The boy did brilliantly to adapt to the position.

"He has played a central role for me. I see him developing and progressing his game day in and day out and he is now looking the part.

"I just think he needed confidence, probably. He came from Dundee United as a central player, but there are a lot of good midfield players here and he played from the left side. He was patient and now he has taken his opportunity."