Rob Kearney wants to see Jimmy O'Brien at full-back in the World Cup warm-ups - to have him ready to go as Hugo Keenan's back-up.
The ultra-consistent Keenan has been close to being an ever-present for Andy Farrell since his Test debut in October 2020.
But there is no specialist full-back to provide cover for the Leinster and Ireland no. 15 in Ireland's World Cup training camp.