clermont auvergne are ` sharpening the blade ' ahead of saturday 's champions cup semi-final having made easy meat of northampton .
clermont thrashed the english champions 37-5 in the last-eight tie at the stade marcel-michelin and - with a place at the twickenham final in sight - the french outfit are now plotting the downfall of the aviva premiership 's second best side .
both clubs are going in search of their first-ever european crown .