Leinster Lions' skipper Reggie Corrigan has missed out on a quickfire return to action after having the plaster cast taken off his broken wrist meaning Brian O'Driscoll takes over the captaincy.
The Irish loose head prop broke his wrist in the Six Nations game against Italy and had a pin put in place. That was taken out two weeks ago, but he was told not to risk playing in Saturday's Heineken Cup quarter-final at Lansdowne Road.
ERCAUDIO**Leinster coach Matt Williams looks forward to the Heineken Cup quarter-final with Biarritz. (3mins 4secs) Click here
Fellow international Emmett Byrne passed a late fitness test to take his place in the front row alongside Shane Byrne, who has also recovered from a shoulder problem.
Leinster coach Matt Williams was finally able to name his side after undergoing a number of late tests. Shane Horgan failed to make it at centre, but Irish back row man Keith Gleeson has overcome his calf problems.
'The biggest danger to us is that we are underprepared. It is going to be hard for us to lay at the same standard as we did at Bristol and Montferrand, but that is the challenge to us," said Williams.
'Biarritz are a fantastic side. They are the reigning French champions and are top of their pool in the French championship this season.
'Since we last played they have had nine matches so it is going to be hard for us. I know we've got home advantage, but Biarritz won't cave in.
'They won't be phased by a big, hostile crowd. They have a dominant scrum, a dominant line-out and are capable of playing the French running game.'
LEINSTER LIONS: Girvan Dempsey; Denis Hickie, Brian O'Driscoll (captain), David Quinlan, Gordon D'Arcy; Christian Warner, Brian O'Meara; Emmett Byrne, Shane Byrne, Peter Coyle, Leo Cullen, Malcolm O'Kelly, Eric Miller, Keith Gleeson, Victor Costello.
Replacements: Niall Treston, Gavin Hickie, Aidan Kearney, Brian O'Riordan, Nathan Spooner, Peter McKenna.