A lack of experience is the reason for Sean Maguire absence from the Republic of Ireland squad according to manager Martin O'Neill.
The Cork City striker has been in scintillating form this season, netting 11 goals in 13 SSE Airtricity League games for the table toppers.
O'Neill is keeping tabs on the 23-year-old but feels Maguire is not yet ready for the step up:
"I'll keep monitoring it as I'll do with a couple of other players who haven't made the squad.
"I'm preparing for this game at the minute, it's good to see he's doing well but I think there are a couple of lads in front of him at the moment.
"If he continues to progress there's no reason why he can't make it, I think we've shown that before with a couple of the lads from the League of Ireland coming in.
"I think a couple of lads are ahead of him at the minute in terms of experience, as much as anything else which is something we might have to draw upon against Austria"
Kevin Long has earned his first Republic of Ireland call-up.
The Burnley defender has been named in the extended squad for the friendlies with Mexico and Uruguay, as well as the World Cup qualifier with Austria in June.
The call-up comes just two weeks after the 26-year-old got his first start in the Premier League in the 2-2 draw with West Brom.
Long retained his spot in the team for the 2-1 loss to Bournemouth at the weekend.
Republic of Ireland manager Martin O’Neill hopes the former Cork City man can get his career back on track after an injury plagued stint in England:
Republic of Ireland MNT Squad
Goalkeepers: Colin Doyle (Bradford City), Rob Elliot (Newcastle United), Keiren Westwood (Sheffield Wednesday), Darren Randolph (West Ham United)
Defenders: Cyrus Christie, Richard Keogh, Alex Pearce (Derby County), Paul McShane (Reading), Shane Duffy (Brighton & Hove Albion), John O'Shea (Sunderland), Andy Boyle (Preston North End), John Egan (Brentford), Marc Wilson (West Bromwich Albion), Kevin Long, Stephen Ward (Burnley), Matt Doherty (Wolverhampton Wanderers)
Midfielders: Aiden McGeady (Everton), Glenn Whelan (Stoke City), Jeff Hendrick, Robbie Brady (Burnley), Harry Arter (Bournemouth), Conor Hourihane (Aston Villa), Stephen Gleeson (Birmingham City), Eunan O'Kane (Leeds United), Darron Gibson (Sunderland), Liam Kelly (Reading), Wes Hoolahan (Norwich City), James McClean (West Bromwich Albion), Callum O'Dowda (Bristol City), Daryl Horgan (Preston North End), Jonathan Hayes (Aberdeen)
Forwards: Kevin Doyle (Colorado Rapids), David McGoldrick (Ipswich Town), Daryl Murphy (Newcastle United), Shane Long (Southampton), Jonathan Walters (Stoke City), Adam Rooney (Aberdeen)