Roy Keane has criticised a number of his former Republic of Ireland team-mates ahead of Saturday's Euro 2008 qualifier against Wales.
Roy Keane has criticised the Republic's selection policy
Keane has claimed that several Republic players get picked only because of their media image.
"Once you keep playing them on the reputation they've built up through the media or because they do lots of interviews, then it's wrong," he said.
"There's a fine line between loyalty and stupidity."
Last week, the Sunderland boss blasted Republic boss Steve Staunton for leaving out Blacks Cats players David Connolly and Liam Miller from his latest Republic squad but it was "senior" players on the receiving end of Keane's latest comments.
"Come Saturday against Wales the senior players - four or five of them - have to step up to the plate. But they've been asked before.
"That's why I don't get bogged down by saying we've got world-class players with Ireland.
"You look at some of our lads at the bigger clubs...none of these players at this moment in time are setting the world alight at their respective clubs."
There's no doubt in my mind that Liam Miller being from Cork certainly doesn't help him
Keane berated the team for celebrating after beating San Marino and advised them to take a lesson from Ireland's other national sports sides following their recent successes.
"The FAI, the soccer, can learn a lot from the rugby lads, even the cricket lads.
"If you go into something believing you're going to get there, then there's a good chance you'll get there," he said.
"If you think you're not going to get there I guarantee you won't get there. And that definitely comes from the top, the FAI (Football Association of Ireland)."
On the FAI, he added: "If you're used to mediocre, that will get through to the players.
"A 'that'll do' attitude has been going on far too long. That'll do the Irish fans. That'll do us. But I think the Irish fans are getting a bit fed up with it."
Keane repeated his claim that Liam Miller has become the latest Cork-born player to receive a rough deal from Republic of Ireland international teams.
"If he was (from) further up the country, I'm pretty sure he would be in the Irish squad.
"I don't just say these things. There's no doubt in my mind that Liam Miller being from Cork certainly doesn't help him."