John Barclay, the 41-times-capped Scotland openside flanker, will miss Scotland’s tour to South Africa next month.
Barclay, 26, is to undergo surgery on a shoulder injury later this week, which was sustained during the season. His hospital appointment precedes him joining the Scarlets in the new season.
As a consequence he will miss the Scotland tour which encompasses a tournament involving South Africa, Samoa and Italy.
At this juncture, Barclay will not be replaced in the party, which is now 30 strong.