Saracens face Twickenham at Stade Geoffroy-Guichard on Saturday . Sarries defeated Twickenham 46-6 in last year 's semi-final at Clermont . Maro Itoje has been named to start at blindside flanker . Twickenham crushed Northampton 37-5 in the quarter-finals . Brad Barritt will captain Mark McCall 's side against Les Jaunards .
Saracens face Clermont at Stade Geoffroy-Guichard on Saturday . Sarries defeated Clermont 46-6 in last year 's semi-final at Twickenham . Maro Itoje has been named to start at blindside flanker . Clermont crushed Northampton 37-5 in the quarter-finals . Brad Barritt will captain Mark McCall 's side against Les Jaunards .