Current Ireland Under 20 international Hanrahan, from Castleisland has been named in Ian Costello's side as have Denis Fogarty, Ian Nagle and Scott Deasy, all regulars in the senior squad this season.
With several players in contention for inclusion in Munster's Heineken Cup match day squad, Costello has delayed finalising his side and if Barnes is not required for Easter Sunday duty he could team up with Hanrahan at the RDS tomorrow.
Munster face a fairly daunting task against what looks a particularly strong Leinster side that will be captained by Rhys Ruddock.
Munster: S Scanlon Cork Con); R O'Mahony Garryowen), L O'Dea (Shannon), I Dineen (Cork Con), AN Other, JJ Hanrahan (UL Bohs), D Cusack (Garryowen), S Deasy (Cork Con), AN Other, C Sheridan (UL Bohs), D Kilcoyne (UL Bohs), D Fogarty (Cork Con), S Henry (UL Bohs), J Ryan (Cork Con), P Borlase , B Hayes (Cork Con), P Donnellan (Cork Con), I Nagle (Cork Con), AN Other, B O'Hara (Cork Con), B O'Mahony (Clontarf), P Butler (Shannon).
Leinster: D Kearney; A Conway, B Macken, C O'Shea, F Carr; N Reid, L McGrath; J McGrath, A Dundon, M Moore; D Browne, M Flanagan; R Ruddock capt, D Ryan, L Auva'a. Replacements: T Sexton, J O'Connell, J Coughlan, J Murphy, M healy, C Marsh, A Boyle.