mark mccall believes has set up a last-four trip to st etienne 's stade geoffroy-guichard on april 18 .
awaiting in the champions cup semi-finals are clermont , who are bristling with confidence after their remarkable 37-5 rout of runaway aviva premiership leaders northampton .
marcelo bosch launches a long range penalty towards the posts with the final act of saracens ' quarter-final .
saracens ' prospects against the top 14 's second-placed team likely to be improved by the return of centre brad barritt .