Liam Scales and Troy Parrott have been ruled out of the Republic of Ireland's two international friendlies against Belgium and Switzerland this week.
Scales suffered an injury ahead of Celtics' 3-1 win over St. Johnstone while Parrott has missed Excelsior's last two matches, including their 1-1 draw against RKC Waalwijk on Saturday.
Interim Head Coach John O'Shea has decided against calling up any replacements with the rest of the squad set to report to the camp on Monday.
U-21 duo Joe Hodge and Andy Moran will also train with the senior squad after the U-21 qualifier against San Marino on Friday.
Derry City goalkeeper Brian Maher has been invited to train with the goalkeepers this week alongside Gavin Bazunu, Caoimhin Kelleher and Mark Travers.
Republic of Ireland Squad
Goalkeepers: Gavin Bazunu (Southampton), Caoimhin Kelleher (Liverpool), Mark Travers (AFC Bournemouth)
Defenders: Seamus Coleman (Everton), Matt Doherty (Wolverhampton Wanderers), Nathan Collins (Brentford), Andrew Omobamidele (Nottingham Forest), Dara O'Shea (Burnley), Jake O'Brien (Lyon), Robbie Brady (Preston North End), Festy Ebosele (Udinese).
Midfielders: Josh Cullen (Burnley), Jason Knight (Bristol City), Will Smallbone (Southampton). Jamie McGrath (Aberdeen), Callum O’Dowda (Cardiff City), Mark Sykes (Bristol City), Finn Azaz (Middlesbrough), Mikey Johnston (West Bromwich Albion).
Forwards: Evan Ferguson (Brighton and Hove Albion), Adam Idah (Celtic), Michael Obafemi (Millwall, on loan from Burnley), Sammie Szmodics (Blackburn Rovers), Chiedozie Ogbene (Luton Town).
Fixtures
International Friendlies
Saturday, March 23rd; Ireland v Belgium, Aviva Stadium, 5pm
Tuesday, March 26th; Ireland v Switzerland, Aviva Stadium, 7.45pm
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