Leinster boss Matt O’Connor expects Saints to ‘put on a show’ at the Aviva Stadium on Saturday evening.
The former Leicester Tigers coach is refusing to write off Northampton, despite seeing his team claim a huge 40-7 win at Franklin’s Gardens last weekend.
Instead, he has been keen to stress what a strong Saints still are.
And O’Connor is taking nothing for granted as Jim Mallinder’s men prepare to head to Dublin for the return date.
“They are a proud team, a successful club,” said the Leinster boss. “They will come to Dublin this week to put on a show.
“We are a humble group. We know what it takes to win competitions. We know it is nowhere near done. There is a lot of work to do.
“We have given ourselves the opportunity to push forward and potentially look at a home quarter-final if we get out of the group, which is a huge carrot for us.
“We’ve got to keep playing at that level, we’ve got to keep getting better, there are loads of things to work on.”