“He’ll do nothing for the next three days, then he starts the graduated return to play,” head coach Gregor Townsend confirmed.

“If everything goes well and he’s feeling good, he’ll be available for Portugal [on 16 November].”

Scotland were already without Kyle Steyn, but Townsend did reveal that Kyle Rowe’s hamstring injury – which forced the winger off against Fiji – is not as bad as originally feared.

“He’s a chance for this week,” Townsend said. “We all felt after the game that could be him missing the next few games, but he’s recovering well.”

The squad will also be bolstered by the availability of Toulouse full-back Blair Kinghorn and Sale Sharks winger Arron Reed, as well as vice-captain Finn Russell.