Leinster's Jamie Heaslip returned to training today, but is rated as 50/50 for Saturday's Champions Cup match with Castres at the RDS.

Heaslip sustained a damaged AC joint injury against Ulster in their recent Pro12 clash and was forced off the field in that tie, and also missed last weekend's victory over Cardiff Blues with the problem.

Sean O'Brien continues his recuperation from a shoulder reconstruction, while Cian Healy has stepped up his comeback from a three-month injury lay-off after tearing his hamstring clean off the bone.

However, it's unlikely that Healy will feature in Leinster's final two pool games against Castres and Wasps in the Champions Cup over the next two weekends.

O'Brien also has more work to do before resuming competitive action.