With a number of internationals still on Ireland duty, Leinster could hand out up to three debuts in their Guinness Pro14 outing against the Ospreys in the RDS Arena on Friday (kick-off, 7.35).

Nineteen year old Scott Penny is named to make his senior debut at openside flanker having impressed in the victorious Celtic Cup campaign. Penny is joined in the back-row by Josh Murphy and Caelan Doris, who makes his first start at the RDS.

There could be more senior debuts handed out over the course of the 80 minutes with Jimmy O’Brien and Jack Kelly named among the replacements. Both players were also part of that winning Celtic Cup team.

UCD and Leinster Academy player Hugo Keenan has been named to start at full-back for his first start with Irish international Adam Byrne on the right wing and James Lowe on the left.

Adam Byrne.

Head coach Leo Cullen has named Noel Reid and Conor O’Brien at 12 and 13 with Nick McCarthy and Ciarán Frawley completing the half-backs. Peter Dooley and Michael Bent have both been named to start at loose and tighthead prop respectively with James Tracy at hooker.

Meanwhile, recent signing Ian Nagle could make his debut for Ulster when they take on Scarlets on Friday as he is named among the replacements for the clash.

Louis Ludik will make his first appearance of the season at outside centre, having recovered from a hamstring injury sustained in May. James Hume is one of four Ulster Academy players named in the starting XV, and will partner Ludik in midfield.

Robert Baloucoune and full-back Michael Lowry join Australian international Henry Speight in the back three, while David Shanahan and Billy Burns are retained at half-back. Kieran Treadwell and Alan O’Connor are named to line out in the second-row with Eric O’Sullivan, Adam McBurney and Marty Moore completing the front five.

Marcell Coetzee, Sean Reidy and Nick Timoney will make up the Ulster back-row for head coach Dan McFarland as they prepare for a 7.35 kick-off at Parc y Scarlets.

Leinster team: Hugo Keenan, Adam Byrne, Conor O’Brien, Noel Reid, James Lowe, Ciarán Frawley, Nick McCarthy; Peter Dooley, James Tracy, Michael Bent, Ross Molony, Scott Fardy, Josh Murphy, Scott Penny, Caelan Doris.

Replacements: Bryan Byrne, Ed Byrne, Vakh Abdaladze, Mick Kearney, Max Deegan, Hugh O’Sullivan, Jimmy O’Brien, Jack Kelly.

Ulster team: Michel Lowry, Robert Baloucoune, Louis Ludik, James Hume, Henry Speight; Billy Burns, David Shanahan; Eric O’Sullivan, Adam McBurney, Marty Moore, Alan O’Connor, Kieran Treadwell, Marcell Coetzee, Sean Reidy, Nick Timoney.

Replacements: J Andrew, A Warwick, T O’Toole, I Nagle, G Jones, J Stewart, D Cave, A Kernohan.