The Cork native has yet to play a game for the Reds first-team.
Meanwhile, the striker would also Town's 50th player to make an global appearance while at Kenilworth Road, and the first to play for Ireland since Ashley Grimes some 31 years ago.
James McCarthy returns to the squad having rehabilitated a broken leg, while Keiren Westwood, Stephen Ward, and Aiden McGeady also earn recalls. At least there is a bit of an understanding of them playing together those two.
The centre-forward, who has scored 11 goals in 34 appearances since moving to Bramall Lane during the close season, joins Enda Stevens, John Egan and the on-loan Scott Hogan in Mick McCarthy's plans for the forthcoming games against Gibraltar and Georgia.
"I've spoken to him a couple of times", said the Ireland manager.
One man who didn't get his name in there is veteran Daryl Murphy, who has resisted McCarthy's offer to come out of global retirement. I've made that clear to him.
Preventive Services Task Force to take baby aspirin daily to reduce their risk of heart disease. For years, millions of adults followed recommendations from the U.S.
"He is now of an age where he likes to have that time off when the worldwide fixtures come around and that will benefit him hugely in terms of his club commitments".
"I'd love to have him back and I've stressed that to him". I did say that "If I need you and I called you.' and I think the final answer was 'We'll see" so it wasn't a no.
Mick McCarthy has revealed that in-form Leeds United striker Patrick Bamford has said "yes" to playing for Ireland.
Speaking at today's provisional squad announcement, McCarthy said: "I contacted him last Saturday lunchtime".
"Both have them have scored goals at their respective levels, wherever they have been", said McCarthy.
The Republic, who appointed McCarthy as successor to Martin O'Neill in November, face Gibraltar away on March 23 and Georgia at home three days later.