"We have two matches left and we are going to put everything into those games to try to qualify for the quarter-finals," he said. "We know Northampton are a very difficult team to play and they are going to be looking for bonus points.
"We experienced terrible conditions against Llanelli Scarlets on Saturday and, with the fatigue from playing in those conditions on a very wet and muddy pitch, six days is not really enough time to recuperate and be ready for Northampton.
"It looks like we need to win both our remaining games with a bonus point each time in order to finish top of the Pool. If we came second, we could qualify as one of the best second-placed teams but it would come down to luck then and we would prefer to have our fate in our own hands.
"Northampton are a complete team. They played very well both up-front and behind the scrum in our away match and we are going to have to up our game from last weekend.
"We made too many mistakes against Llanelli and, given the importance of this next game, you can't afford to make handling errors.
"We have a good record at home and, although Northampton are a great team and everyone knows that, we are determined to do well."