Hugo Keenan will make his 50th appearance for Leinster when they face Gloucester at Kingsholm in Saturday's Heineken Champions Cup tie (kick-off 1pm).
Keenan continues at full-back with Garry Ringrose restored as captain on his return to the starting line-up, while Cian Healy is poised to make his 100th European appearance after being named on the bench.
Ringrose is partnered by the in-form Jamie Osborne in midfield with Jamison Gibson-Park and Ross Byrne the half-back combination.
Jordan Larmour and Jimmy O’Brien are retained on the wings as James Lowe is not included in the match-day 23.
Ireland internationals Andrew Porter, James Ryan, Ryan Baird, Josh van der Flier and Caelan Doris come into the pack, while Michael Milne, Brian Deeny and Liam Turner could all make their European debuts from the bench.
Leinster: Hugo Keenan; Jordan Larmour, Garry Ringrose (capt), Jamie Osborne, Jimmy O’Brien; Ross Byrne, Jamison Gibson-Park; Andrew Porter, Dan Sheehan, Michael Ala’alatoa; Ross Molony, James Ryan; Ryan Baird, Josh van der Flier, Caelan Doris.
Replacements: Rónan Kelleher, Michael Milne, Cian Healy, Brian Deeny, Jack Conan, Nick McCarthy, Harry Byrne, Liam Turner.
Munster have made nine changes to their side for the visit of Northampton Saints on Saturday (kick-off 3.15pm, live on RTÉ2 and RTÉ Player), but the omission of Conor Murray from their squad is the main talking point of Graham Rowntree's match-day squad.
The 100-cap Ireland international has been left out of the match-day 23, with Craig Casey returning to the starting side and Paddy Patterson included on the bench.
Casey joins Joey Carbery in the half-backs while Jack Crowley is also included, named at first centre alongside Antoine Frisch.
Shane Daly swaps from the right wing to the left, with Calvin Nash coming into the No 14 shirt as full-back Mike Haley completes the backline.
Roman Salanoa retains his place in the pack, with Niall Scannell and Dave Kilcoyne coming into the front row. Tadhg Beirne returns in the second row to partner Jean Kleyn, while Gavin Coombes drops back to No 8, having started at lock a week ago.
Jack O'Donoghue continues on the blindside flank while Peter O'Mahony is also available and captains the team from openside.
Munster: Mike Haley; Calvin Nash, Antoine Frisch, Jack Crowley, Shane Daly; Joey Carbery, Craig Casey; Dave Kilcoyne, Niall Scannell, Roman Salanoa; Jean Kleyn, Tadhg Beirne; Jack O'Donoghue, Peter O'Mahony (capt), Gavin Coombes.
Replacements: Scott Buckley, Josh Wycherley, John Ryan, John Hodnett, Alex Kendellen, Paddy Patterson, Rory Scannell, Liam Coombes.
Stuart McCloskey, James Hume and John Cooney have all been rested by Ulster head coach Dan McFarland, who makes eight changes for their trip to face La Rochelle (kick-off 5.30pm Irish time).
Five of those changes come in the backline, including a new half-back partnership. Nathan Doak comes in for Cooney, while Ian Madigan makes just his second appearance of the season at 10 after recovering from injury.
With McCloskey and Hume both rested, Stewart Moore and Luke Marshall come into the centre, while Rob Lyttle replaces the injured Robert Baloucoune on the right wing.
Jacob Stockdale and Mike Lowry are the only backs to keep their place in the side after last week's 31-29 defeat to Benetton.
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In the pack, Iain Henderson moves from lock to flanker, joining Nick Timoney and Duane Vermeulen in a powerful back row.
Alan O'Connor joins Kieran Treadwell in the second row, while Rory Sutherland returns at loosehead, partnering Jeff Toomaga-Allen and Rob Herring in the front row.
Academy forward Harry Sheridan is primed to make his first senior appearance off the bench.
Ulster: Michael Lowry; Rob Lyttle, Stewart Moore, Luke Marshall, Jacob Stockdale; Ian Madigan, Nathan Doak; Rory Sutherland, Rob Herring, Jeff Toomaga-Allen; Alan O'Connor, Kieran Treadwell; Iain Henderson (capt), Nick Timoney, Duane Vermeulen.
Replacements: John Andrew, Eric O'Sullivan, Andy Warwick, Harry Sheridan, David McCann, Michael McDonald, Billy Burns, Ethan McIlroy.
Mack Hansen will start at full-back for Connacht as they chase a third successive Challenge Cup win when Brive visit the Sportsground on Saturday (kick-off 5.30pm).
Hansen replaces Tiernan O'Halloran at 15 with Byron Ralston and Alex Wootton coming in at outside centre and left wing respectively.
Cathal Forde is retained at inside centre after his two-try display against the Cell C Sharks while Colm Reilly partners captain Jack Carty at half-back.
Peter Dooley and Dave Heffernan pack down alongside Finlay Bealham in the front row, with Josh Murphy and Niall Murray named in the second row.
Cian Prendergast returns to the starting line-up at blindside flanker, with Conor Oliver and Jarrad Butler completing the back row.
Connacht: Mack Hansen; John Porch, Byron Ralston, Cathal Forde, Alex Wootton; Jack Carty (capt), Colm Reilly; Peter Dooley, Dave Heffernan, Finlay Bealham; Josh Murphy, Niall Murray; Cian Prendergast, Conor Oliver, Jarrad Butler.
Replacements: Dylan Tierney-Martin, Jordan Duggan, Jack Aungier, Leva Fifita, Ciaran Booth, Kieran Marmion, Tom Daly, Conor Fitzgerald.
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Watch Munster v Northampton in the Champions Cup on Saturday from 2.30pm on RTÉ2 and RTE Player with live blog on RTÉ.ie/Sport and the RTÉ News app. Listen to live commentary on Saturday Sport on RTÉ Radio 1.
Listen to live commentary of La Rochelle v Ulster in the Champions Cup on Saturday from 5.30pm on Saturday Sport on RTÉ Radio 1.
