Gordon D'Arcy is one of nine full Ireland internationals in all and he joins Isa Nacewa, a try scorer last weekend, and man of the match Sean O'Brien in the squad which is expected to be reduced on Thursday lunchtime.
Leinster Squad to face the Ospreys
Backs: Shaun Berne, Gordon D'Arcy, Girvan Dempsey, Shane Horgan, Chris Keane, David Kearney, Simon Keogh, Fergus McFadden, Isa Nacewa, Paul O'Donohoe, Eoin Reddan, Jonathan Sexton
Forwards: Leo Cullen, John Fogarty, Jason Harris-Wright, Cian Healy, Nathan Hines, Bernard Jackman, Shane Jennings, Stephen Keogh, Ronan McCormack, Kevin McLaughlin, Sean O'Brien, Malcolm O'Kelly, Mike Ross, Devin Toner, Stan Wright