Johnny Sexton will make his return from a calf injury for Leinster in tomorrow night's Champions Cup Pool A clash with Gloucester at the RDS (live on RTÉ2 and RTÉ Player), however Tadhg Furlong once again misses out.
The Ireland captain is named on the bench, having been sidelined for the last four games for club and country with a calf injury
Leo Cullen has made four changes to his side following last week's hammering of Racing 92, with Garry Ringrose once again captaining the side.
There's just one change to the backline, with Luke McGrath rotated into the starting side at scrum-half and Jamison Gibson-Park dropping to the bench, as Ross Byrne continues at out-half.
Ringrose and Charlie Ngatai pair off in the centre with Hugo Keenan at full-back, between wingers James Lowe and Jimmy O'Brien.
There are three changes in the pack, with Rónan Kelleher brought in at hooker, swapping in for Dan Sheehan, while Andrew Porter and Michael Ala'alatoa continue at prop.
Ross Molony (above) comes into the second row for his 150th Leinster appearance, and packs down alongside James Ryan, with Jack Conan restored to the team in the back row.
Elsewhere among the replacements, Jordan Larmour makes his return from a foot injury having been sidelined since early October.
Gloucester head coach George Skivington is seemingly prioritising the Premiership over the Champions Cup, with 13 changes to his side following last week's win against Bordeaux-Begles.
Chris Harris, Val Rapava Ruskin, Jonny May and Lewis Ludlow are among those rested, with full-back Lloyd Evans and wing Alex Hearle the only remaining starters from Round 1, as the Cherries focus on their Christmas Eve meeting with the Leicester Tigers in the Premiership.
Leinster: Hugo Keenan; Jimmy O'Brien, Garry Ringrose (capt), Charlie Ngatai, James Lowe; Ross Byrne, Luke McGrath; Andrew Porter, Rónan Kelleher, Michael Ala'alatoa; Ross Molony, James Ryan; Caelan Doris, Josh van der Flier, Jack Conan.
Replacements: Dan Sheehan, Ed Byrne, Cian Healy, Joe McCarthy, Max Deegan, Jamison Gibson-Park, Johnny Sexton, Jordan Larmour.
Bundee Aki (above) is among eight changes for Connacht, ahead of their Challenge Cup meeting with Brive in France.
Director of Rugby Andy Friend has used the competition to rotate his squad, with Jack Carty, Finlay Bealham and Cian Prendergast among those rested, while Mack Hansen remains out with a leg injury.
Aki starts alongside Tm Daly in a powerful centre, while Adam Byrne and Diarmuid Kilgallen continue on the wings, with Conor Fitzgerald brought in at full-back.
David Hawkshaw retains his place at out-half, while Kieran Marmion returns behind the scrum.
In the pack, Sam Illo makes his first start for the province at tighthead, joining Peter Dooley and Shane Delahunt in the front row, while there's also a first start for lock Darragh Murray, who packs down alongside Gavin Thornbury.
Paul Boyle captains the side from number 8, with Oisin Dowling making a rare appearance at flanker, and Shamus Hurley-Langton completing the pack.
Connacht: Conor Fitzgerald; Adam Byrne, Tom Daly, Bundee Aki, Diarmuid Kilgallen; David Hawkshaw, Kieran Marmion; Peter Dooley, Shane Delahunt, Sam Illo; Darragh Murray, Gavin Thornbury; Oisin Dowling, Shamus Hurley-Langton, Paul Boyle (capt)
Replacements: Dave Heffernan, Jordan Duggan, Dominic Robertson-McCoy, Niall Murray, Ciaran Booth, Colm Reilly, Byron Ralston, Oran McNulty
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