Gary Graham has been called into the Scotland squad as for the remainder of the autumn internationals as a replacement for Blade Thompson.
The Scarlets flanker suffered concussion in defeat to Edinburgh on November 2 and will remain with his club, prompting Gregor Townsend to call Graham to the Scotland squad for the first time.
The Newcastle back-row, a former youth international, was an unused member of England's 2018 Six Nations squad, but remains eligible for the Dark Blues and could feature against South Africa on Saturday.
The 26-year-old said: "I'm Scottish through-and-through, but England asked me first as I'm eligible through residency. It would have been a silly opportunity to pass up, as I hadn't been selected for a Scotland squad since under-20s."
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