It means the Dublin-born player will be unavailable for the Carling Cup first round tie against Oldham Athletic, a match reserve keeper Sam Slocombe was always likely to play in anyway.
Murphy has two international caps to his name, the second coming in May when he came off the bench for the final four minutes against Algeria.
The match will be the first game held at the Aviva Stadium in Dublin. Argentina were due to announce on Tuesday whether Diego Maradona would stay on as coach.