Clermont Auvergne take on Saracens in the World Cup semi-final . French side aiming to make amends for last year 's exit at same stage . Clermont thrashed English champions Northampton in the last-eight .
Clermont Auvergne take on Saracens in Champions Cup semi-final . French side aiming to make amends for last year 's exit at same stage . Clermont thrashed English champions Northampton in the last-eight .