All Black Shannon Frizell and Ireland centurion Cian Healy have been confirmed as the latest names to join up with the Barbarians to face the Springboks in June.
Veteran Ireland trio Peter O'Mahony, Cian Healy and Conor Murray have announced that they will retire from international rugby at the end of the Six Nations next month.
Ireland head coach Andy Farrel said he is devastated at the loss of veteran prop Cian Healy, who is set to miss the upcoming Rugby World Cup.
Ireland beat Samoa 17-13 in a rainy Bayonne on Saturday night but celebrations were dampened by Cian Healy's injury scare.