James McClean withdrew from the squad after being unable to train . The midfielder has returned to Everton as he struggles with a groin injury . Darron Gibson and Stephen Ward are trying to overcome ankle problems . The Republic of Ireland take on Poland at the Aviva Stadium on Sunday .
Darron Gibson withdrew from the squad after being unable to train . The midfielder has returned to Everton as he struggles with a groin injury . James McClean and Stephen Ward are trying to overcome ankle problems . The Republic of Ireland take on Poland at the Aviva Stadium on Sunday .