Leinster head coach Leo Cullen says yesterday's Investec Champions Cup semi final loss is going to sting for a long time.
The Blues failed in their bid to reach a fourth consecutive final as they fell to a 3 point defeat at home to the Northampton Saints.
It means the search for a first European trophy win since 2018 goes on.
Cullen says this is the one they really wanted to win
It's an all French affair in the other semi final this afternoon.
Bordeaux Begles meet Toulouse for a chance to play the Saints in Cardiff on the 24th of May.
Kick off today is at 3pm.