The Magners League leaders have received a boost with both Brian O'Driscoll and Trevor Hogan returning to the panel after injury.
O'Driscoll missed the 29-0 victory over Ulster on St. Stephen's Day, while Trevor Hogan (knee) has been out of action since the beginning of October. Props Ronan McCormack and Stephen Knoop are also included in the squad and both could come into contention for a place after Ollie le Roux was ruled out with a rib injury.
The 26-man squad will be put through their paces on Thursday before the team is named to face the reigning Magners League champions on Friday lunchtime.
In the region of 13,000 tickets have been sold for Saturday's match and tickets are still available from Spar (Donnybrook), the Leinster Rugby Store (inside the ground in Donnybrook) and online from www.leinsterrugby.ie
There will also be Ticketmaster outlets open around the ground on the day from 5pm.
Leinster squad to face Ospreys
Forwards (14): Cian Healy, Ronan McCormack, Brian Blaney, Bernard Jackman, Stephen Knoop, Stan Wright, Leo Cullen, Trevor Hogan, Cameron Jowitt, Malcolm O'Kelly, Keith Gleeson, Shane Jennings, Stephen Keogh, Jamie Heaslip
Backs (12): Guy Easterby, Chris Keane, Cillian Willis, Felipe Contepomi, Jonathan Sexton, Christian Warner, Gordon D'Arcy, Brian O'Driscoll, Gary Brown, Luke Fitzgerald, Rob Kearney, Girvan Dempsey
REFEREE: Peter Allan (SRU), SUB REFEREE: Colin Stanley (IRFU), TOUCH JUDGE: Ger English (IRFU), 4th OFFICIAL: Alan Rogan (ARLB), 5th OFFICIAL: Ed Kenny (ARLB), TMO: Brian MacNeice (IRFU)
Guinness PRO12
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