Shane Jennings will make the final appearances of his professional career for the Barbarians against Ireland and England.
The flanker will be joined by Leinster teammates full-back Zane Kirchner and fly-half Jimmy Gopperth for the games against Ireland at Thomond Park (May 28) and an England XV at Twickenham (May 31).
They will line up alongside the likes of Joe Rokocoko, George Smith, Adam Jones, Alex Cuthbert and Thomas Waldrom for the famous invitation club that celebrates the 125th anniversary of its foundation this year.
Jennings brings down the curtain after 13 caps for Ireland and Pro12 and European Cup wins with Leinster, as well as a Premiership title in England during his two-season spell at Leicester Tigers.
He said farewell to the Leinster fans at the RDS Arena earlier this month after a difficult Pro12 and European campaign for his provincial side before getting the invitation to join the Barbarians from former Australia coach Robbie Deans.
Jennings said: "This will be my last go as a professional player. It's a shame it didn't end as I would have liked with Leinster but every cloud has a silver lining and I can't wait to get going and to wear the jersey.
"I grew up watching 101 Great Tries on video and Gareth Edwards scoring for the Barbarians so it's been something I've been aware of ever since then.
"I did get called up a couple of years ago but couldn't do it. It's funny that I'm finally going to be able to do it against Ireland."