Ireland international Gordon D'Arcy will have another chance to prove his match sharpness to Declan Kidney for Leinster against the Ospreys in Friday night's Magners League clash at the Liberty Stadium (7.05pm).
Ireland internationals Girvan Dempsey, Trevor Hogan, Shane Horgan, Bernard Jackman, Shane Jennings and Malcolm O'Kelly and overseas players Felipe Contepomi, Isa Nacewa, Stan Wright, Chris Whitaker and Rocky Elsom are also in tow.
Former Ireland Under-20 centre Eoin O'Malley joins Paul O'Donohoe, a debutant in the 31-17 victory over the Scarlets last time out, in the extended squad.
The team is expected to be announced on Thursday lunchtime.
LEINSTER SQUAD (v Ospreys)
Forwards (15): Cian Healy, Brian Blaney, John Fogarty, Bernard Jackman, Stephen Knoop, Stan Wright, Trevor Hogan, Devin Toner, Malcolm O'Kelly, Rocky Elsom, Cameron Jowitt, Shane Jennings, Sean O'Brien, Stephen Keogh, Kevin McLaughlin
Backs (11): Paul O'Donohoe, Chris Whitaker, Felipe Contepomi, Jonathan Sexton, Simon Keogh, Isa Nacewa, Gordon D'Arcy, Fergus McFadden, Eoin O'Malley, Shane Horgan, Girvan Dempsey