O'Gara limped of at half time in the RDS but according to Declan Kidney, "this game (v Ospreys) has come too soon for him to be considered but he is making good progress and at this stage we haven't ruled him out of consideration for the game against Saracens.
Peter Stringer has been included in the squad for Saturday as have the two players who missed out on the Leinster game, Marcus Horan and David Wallace while there is also a return to the Munster squad for John O'Sullivan, Anthony Horgan, Barry Murphy and Keith Earls.
Kidney will announce his side on Friday at lunchtime.
Munster Squad: Shaun Payne, Denis Hurley, Doug Howlett, Kieran Lewis, Keith Earls, Barry Murphy, Rua Tipoki, Lifeimi Mafi, Brian Carney, Anthony Horgan, Ian Dowling, Paul Warwick, Jeremy Manning, Tomas O'Leary, Gerry Hurley, Peter Stringer.John Hayes, Marcus Horan, Tony Buckley, Federico Pucciariello, Jerry Flannery, Frank Sheahan, Paul O'Connell, Donncha O'Callaghan, Donnacha Ryan, Mick O'Driscoll, Alan Quinlan, David Wallace, Denis Leamy, Anthony Foley, John O'Sullivan, Niall Ronan.
Guinness PRO12
Suite 208, Alexandra House,
The Sweepstakes
Ballsbridge, Dublin 4, Ireland