Leinster's depleted forward stocks have taken another hit ahead of their Heineken Champions Cup quarter-final against Exeter Chiefs with news Jack Dunne will be out for 16 weeks after breaking his ankle in training. Leo Cullen will still be without a number of influential players for the Sandy Park clash this Saturday, with Garry Ringrose (ankle), Will Connors, Caelan Doris and James Ryan (both concussion) not ready to return for the game. The Blues trained today after they were awarded a walkover when their last 16 meeting with Toulon was cancelled on Friday. Exeter beat Lyon on Saturday to set-up a titanic quarter-final.