■By DECLAN ROONEY

Starts: Sean O’Brien

No.10: Antoine Dupont

FLY-HALF Johnny Sexton returns to face Toulouse in the semi-final of Leinster’s Champions Cup defence. The 33-year-old, who has had a quad injury, has not played for his province since the end of the Six Nations.
Leinster have conquered Europe four times – but have experienced a stutter in form of late and have failed to win their last three PRO14 games.
But they haven’t lost at home all season – including their slender Heineken Cup quarter-final win against Ulster – and beat Toulo...