Jonny Gray has been ruled out of the remainder of the Six Nations championship with a hand injury.
The Glasgow Warriors lock, who is departing the PRO14 side after eight years to join Exeter Chiefs in the summer, played in Scotland's defeats to Ireland in Dublin and at home to England in the Calcutta Cup clash.
The 25-year-old forward will sit out the rest of the campaign through injury and is returning to Scotstoun for "ongoing care and assessment", the Scottish Rugby Union has confirmed.
Gray has been partnered by Glasgow team-mate Scott Cummings in the second-row for both matches so far, but head coach Gregor Townsend could call on experienced Edinburgh duo Grant Gilchrist and Ben Toolis to replace the 57-cap Warriors man, while Alex Craig is another option.
Scotland's remaining fixtures see them travel to Italy on February 22 before a home clash with France on March 8. Their tournament finishes with a trip to Wales on March 14.