Edinburgh lock Sam Skinner will face a race to feature for Scotland this autumn after undergoing surgery on his knee during the off-season.
Ten players in the 23-man squad could make their debuts at the TD Place Stadium in Ottawa, which kicks off their four-match summer tour.
The dual-qualified half-back had been touted for a potential call-up by Steve Borthwick’s England, but that hasn’t materialised and he has instead declared his allegiance to the Scots for their upcoming trip.
Flanker Hamish Watson is out of the Scotland squad ahead of their Guinness Six Nations encounter with Ireland in Dublin this Saturday.
.Hamish Watson’s early try set Edinburgh on their way to a hard-fought 19-15 victory at home to Ospreys in the United Rugby Championship.
Mark Bennett will make his 100th appearance for Edinburgh against Ospreys in the BKT United Rugby Championship at Hive Stadium on Friday night.
Toulouse fullback Blair Kinghorn has returned to the Scotland squad ahead of the Calcutta Cup clash with England on Saturday in the Guinness Six Nations.