Ireland centre Bundee Aki will lead the Barbarians against England as one of three home unions players included in the squad for the non-cap international at Twickenham.
Aki, a Grand Slam winner who has won all seven of his starts for Joe Schmidt's men, is joined by Wales openside Justin Tipuric and Scotland scrum-half Greig Laidlaw among the 17 players confirmed so far.
Barbarians and Bristol head coach Pat Lam, who signed Aki for Connacht from the Chiefs in 2014, said: "I'd like to thank Joe Schmidt for making Bundee Aki available to us, as he'll be a big asset.
"The big thing about Bundee is that he's an unbelievable competitor. A lot of the Pacific Island boys have that X-factor but he loves putting his head in the dark places and thriving in turnover and contact work."
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