Jack Crowley will get a chance to impress on Saturday night.
He's been named at out-half for Ireland's first World Cup warm-up game with Italy at the Aviva.
Crowley forms a half-back partnership with Munster teammate, Craig Casey.
Elsewhere in the backs, Jimmy O'Brien starts at full-back with Keith Earls and Jacob Stockdale on the wings.
Robbie Henshaw and Stuart McCloskey partner-up in midfield.
Dave Kilcoyne, Rob Herring and Tom O'Toole are in the front row.
Iain Henderson captains the side from the second row where he's partnered by Joe McCarthy.
The back row is comprised of Ryan Baird, Caelan Doris and Jack Conan.
As well as the potential debuts for Stewart, Frawley and Nash on the bench, Cian Healy, Tadhg Furlong and Tadhg Beirne will provide experience in reserve, while Connacht pair Cian Prendergast and Caolin Blade are in line to win their second caps.