Edinburgh v Munster
12.45pm, BT Sport 3
Munster welcome back Joey Carbery for their trip to Murrayfield after a month out with a hamstring injury. Carbery signed a contract extension with the two-times champions this week and his return is one of 11 changes made by Johann van Graan, whose side are seeking a third consecutive semi-final. Jack Donoghue is rewarded for his impressive recent form with a first Champions Cup start at openside flanker. Edinburgh have Stuart McInally back to captain the side from hooker after he was rested for the Pro14 victory over Leinster. Darcy Graham moves to full-back with Blair Kinghorn injured while John Barclay continues in the back row after returning from a 10-month injury layoff last time out.
Saracens v Glasgow
3.15pm, BT Sport 3
Maro Itoje makes his return from a knee injury for Saracens, coming into the side at blindside flanker as Mark McCall’s side seek a third win over Glasgow Warriors this season. Itoje has not played since suffering a knee injury in England’s opening Six Nations match away to Ireland on 2 February. The England captain Owen Farrell and the second row George Kruis also return having been rested for last weekend’s Premiership win over Harlequins. For Glasgow, the Scotland full-back Stuart Hogg makes a welcome return from a shoulder injury and Ali Price comes back into the side at scrum-half, having been rested last time out. There are 11 players in action who featured in the 38-38 draw between England and Scotland this month.
Leinster v Ulster
5.45pm, BT Sport 3
Leinster have suffered a considerable blow with Johnny Sexton ruled out through injury. The Ireland fly-half suffered a knee injury in January and struggled with a thigh problem during the Six Nations. In his absence Ross Byrne starts. James Lowe also misses out – a victim of the overseas-players limit – with Scott Fardy named to start and Jamison Gibson-Park among the replacements. Jordan Larmour has been preferred to Rob Kearney at full-back for the defending champions. Ulster, meanwhile, are boosted by the return of Iain Henderson, who slots back in at lock following a hamstring injury. Jordi Murphy has been named in the back row and lines up against his former club for the first time.
Racing 92 v Toulouse
3.15pm Sunday, BT Sport 3
Romain Ntamack has been selected at inside-centre by Toulouse rather than Pita Akhi, having established himself at fly-half for France during the Six Nations. Cheslin Kolbe has been selected at full-back, with Maxime Medard switching to the wing. The Scotland international Richie Gray is named in the second row with Jerome Kaino at No 8. Racing, meanwhile, have picked Finn Russell and Simon Zebo in an eye-catching back-line and also name Donnacha Ryan in a fearsome-looking pack. Last season’s runners-up have also selected Bernard le Roux at flanker, with Wenceslas Lauret fit enough for a place among the replacements.