Iain Henderson a doubt for Ulster's European clash with Leinster

Iain Henderson remains a doubt for Ulster's Heineken Champions Cup quarter-final with Leinster.

The second row suffered a knee injury in Ireland's Six Nations win over France, and missed the defeat to Wales as a result.

Henderson's injury is being taken day-by-day by the coaching staff.

However, Will Addison and Craig Gilroy will both miss the game through injury.