The 34-year-old scrum-half will earn his 127th England cap against the Pumas in his tournament debut.

In the England pecking order, Youngs is behind Alex Mitchell and Leicester teammate Jack van Poortvliet.

When current coach Steve Borthwick was captain, he made his Test debut against Scotland in March 2010.

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Youngs has represented England in four World Cups, toured Australia with the British and Irish Lions in 2013, and is one of only five Englishmen to have 100 caps.

He won four Six Nations titles, including the Grand Slam in 2016, and was a World Cup finalist in 2019.

Youngs’ international career began on the wing, filling in for the injured Ugo Monye in a Calcutta Cup tie against Scotland.

A few months later, he scored his first Test try as a scrum-half in Australia’s 21-20 victory in Sydney.

On his 115th appearance in the Six Nations triumph over Wales in February 2022, Youngs surpassed World Cup-winning prop Jason Leonard to become England’s most capped men’s player.

He will fall 26 caps short of Sarah Hunter’s England record, which she set in March with her 141st and last appearance for the Red Roses.

Youngs’ declaration follows the retirement of lock Courtney Lawes, who played his 105th and last Test in England’s World Cup semi-final loss to South Africa.