Apart from Roy, Lewis Gregory will also make a Test debut as he found a spot in the 13-man squad named by the England National Cricket Selectors on Wednesday. It will be the 28-year-old's first first-class match since last November when he batted at number three for the England Lions against Pakistan A in Abu Dhabi, making 59 off 73 balls.
England chairman of selectors Ed Smith confirmed Roy would make his debut against Ireland, telling Sky Sports, “We have total confidence he will be able to adapt to red-ball cricket.”
On James Anderson's chances of being involved against Ireland as he returns from a calf tear, Smith added, “It's not clear. He's making good progress and, if he's fit to play without risk against Ireland, that's a possibility.”
Archer, who has yet to make his England debut in Test cricket, will have a period of rest before being considered for selection for the Ashes. He will have a short break in Barbados before returning to the UK later this month.
After playing a pivotal role in the World Cup triumph, Archer has been awarded an increment contract by the ECB for the next 12 months.
Ben Stokes and Jos Buttler, who displayed a brilliant form during England's maiden World Cup title, have been given rest for the match. Moreover, Jofra Archer and Mark Wood also did not find a spot as both are suffering from a left side strain.
However, Archer's impeccable performance in the premier tournament has awarded him an increment contract by the England Cricket Board (ECB) for the next 12 months.
Squad:
Joe Root (c), Moeen Ali, James Anderson, Jonny Bairstow, Stuart Broad, Rory Burns, Sam Curran, Joe Denly, Lewis Gregory, Jack Leach, Jason Roy, Olly Stone, Chris Woakes.