O'Neill selects squad for World Cup Play-Off
Ireland are away in the first leg in Parken Stadium, Copenhagen on Saturday, November 11 before hosting the second leg game in Aviva Stadium on Tuesday, November 14 in front of a sold-out crowd.
Goalkeeper Keiren Westwood returns following an injury to his ribs, but Jonathan Walters is ruled out with a knee complaint. Midfielder David Meyler is suspended for the first leg game.
The squad will meet up on Monday, November 6 to begin preparations at the FAI National Training Centre before flying to Copenhagen on Thursday, November 9.
Republic of Ireland Squad
Goalkeepers: Darren Randolph (Middlesbrough), Keiren Westwood (Sheffield Wednesday), Rob Elliot (Newcastle United), Colin Doyle (Bradford City)
Defenders: Cyrus Christie (Middlesbrough), Matt Doherty (Wolverhampton Wanderers), Paul McShane (Reading), Richard Keogh (Derby County), Shane Duffy (Brighton & Hove Albion), Ciaran Clark (Newcastle United), John O'Shea (Sunderland), Kevin Long, Stephen Ward (Burnley)
Midfielders: Aiden McGeady (Sunderland), Daryl Horgan, Alan Browne (Preston North End), Glenn Whelan, Conor Hourihane (Aston Villa), Harry Arter (Bournemouth), James McCarthy (Everton), Robbie Brady, Jeff Hendrick (Burnley), Eunan O'Kane (Leeds United), David Meyler (Hull City), Wes Hoolahan (Norwich City), Callum O'Dowda (Bristol City), Jonny Hayes (Celtic), James McClean (West Bromwich Albion)
Forwards: Shane Long (Southampton), Daryl Murphy (Nottingham Forest), David McGoldrick (Ipswich Town), Sean Maguire (Preston North End), Scott Hogan (Aston Villa), Aiden O'Brien (Millwall)