Final four.

Dublin’s Aviva Stadium and the Ricoh Arena in Coventry, as well as three French stadiums have been chosen as the venues which are in line to host this season’s Champions Cup semi-finals on 21 and 22 April.

If Scarlets manage to defeat La Rochelle in the first of the Champions Cup quarter-finals tomorrow evening, they will travel to play either number one-ranked Leinster Rugby at the Aviva Stadium, or holders Saracens at the Ricoh Arena.

However, if Champions Cup debutants, La Rochelle, emerge victorious, they will earn home country advantage and will meet the winners of Sunday’s Leinster v Saracens tie at Stade Chaban-Delmas.

If Munster Rugby get the better of RC Toulon on Saturday, they will travel to France to play either ASM Clermont Auvergne at Stade Geoffroy Guichard or Racing 92 at Stade Chaban-Delmas.

But if Toulon win in Limerick, they will have home country advantage at the Allianz Riviera Stadium against the winners of Sunday’s Clermont v Racing 92 quarter-final.

The format for the semi-final matches in the Champions Cup recognises performances by clubs during the pool stage as well as the achievement of winning a quarter-final match away from home.

The Champions Cup semi-finals are played at venues designated by EPCR which have been selected in this instance in conjunction with the Irish Rugby Football Union, Premiership Rugby and the Ligue Nationale de Rugby.

Champions Cup semi-finals – 21/22 April

SF 1: if Leinster Rugby v Scarlets – Aviva Stadium (Dublin)
SF 1: if Saracens v Scarlets – Ricoh Arena (Coventry)
SF 1: if La Rochelle v Leinster Rugby – Stade Chaban-Delmas (Bordeaux)
SF 1: if La Rochelle v Saracens – Stade Chaban-Delmas (Bordeaux)

SF 2: if ASM Clermont Auvergne v Munster Rugby – Stade Geoffroy Guichard (Saint-Etienne)
SF 2: if Racing 92 v Munster Rugby – Stade Chaban-Delmas (Bordeaux)
SF 2: if RC Toulon v ASM Clermont Auvergne – Alllianz Riviera Stadium (Nice)
SF 2: if RC Toulon v Racing 92 – Allianz Riviera Stadium (Nice)