Republic of Ireland boss Giovanni Trapattoni has suffered a double blow ahead the World Cup qualifiers against Germany and the Faroe Islands.
Central defender Sean St Ledger picked up a hamstring injury during Leicester's 2-0 npower Championship victory over Bristol City on Saturday, while winger James McClean reported a tightness in his groin following Sunderland's 3-0 Premier League defeat at Manchester City.
St Ledger will join up with the rest of the squad tomorrow to have his injury assessed, but McClean will remain on Wearside for a scan.
A spokesman for the Football Association of Ireland said: "Sean St Ledger sustained a suspected hamstring injury. At the moment it looks unlikely that he will be able to play in the Germany match, but he will report for assessment.
"James McClean reported a very tight groin after his match and will be scanned at his club on Monday."
The news will come as a fresh blow to Trapattoni, who has already lost striker Kevin Doyle to a thigh problem.
Manchester United winger Robbie Brady, who was initially placed on the stand-by list, has already been drafted into the squad along with Sunderland's David Meyler, and it remains to be seen if the Italian calls for further reinforcements.
The Republic face Group C favourites Germany at the Aviva Stadium on Friday evening and then head for Torshavn for the clash with the Faroes next Tuesday.
They launched their qualification campaign with an unconvincing 2-1 win in Kazakhstan last month and will be looking for a significant improvement this time around.
