Both D'Arcy and Jamie Heaslip (ankle) will be monitored this week, ahead of Thursday's team announcement prior to the squad's departure for Paris.
There were no other fresh injury concerns for Leinster ahead of the round 6 encounter, with Dominic Ryan, Sean O'Brien, Fergus McFadden, Isa Nacewa and Eoin O'Malley, who were try scorers against Saracens, all in the frame.
Jonathan Sexton's 13-point haul against Sarries brought his tally in this season's Heineken Cup to 55 points, bringing his career tally in Leinster colours in all competitions to 424 points in 66 games.
Meanwhile, the number of supporters attending all Leinster games this season passed the 300,000 mark at the weekend (305,014). In excess of 600 Leinster supporters are expected to make the trip to Paris this weekend.