Caelan Doris has signed a new deal to remain with Leinster.
Doris, 23, has developed into one of Ireland's key players 18 months out from the 2023 World Cup but, strangely, is not on a central IRFU contract.
Having missed last year's Six Nations due to concussive symptoms, the Ballina man returned ahead of the summer Tests and was the outstanding player in Andy Farrell's squad in the successful November series.