Scotland have called in tighthead prop Euan Murray and back-row duo Tyrone Holmes and Adam Ashe to their June touring squad that is in South Africa.
New Glasgow signing Murray is the only capped player of the trio and would win his 60th Scotland cap if he plays against the Boks next Saturday.
Holmes has played 19 games for Glasgow since joining ahead of 2013/14. He has played for Scotland 'A' in the draw with England Saxons.
Ashe is an Elite Development Player aligned to Glasgow Warriors, and has represented Scotland at U17, U18 and U20, as well as in Sevens rugby.