The 32-year-old will leave Saracens after 15 seasons to move across the Channel after agreeing a two-year contract

Four tries in the final 15 minutes helped Leo Cullen's charges to victory in Dublin 4.

Leinster can seal home advantage for the Heineken Champions Cup's round of 16 with a win against Racing 92 this afternoon.

Scotland star will move to the west country after the 2023 tournament in .

Lancaster will take on the role from next season.

In Pool B, Munster are set to face Toulouse and Northampton, while Ulster will meet defending champions La Rochelle and Sale.