Richard Dunne is probably the best player right now, but one doesn't usually put a defender's name on the back of a jersey. Though his international form may be spotty, I would have to recommend Robbie Keane.
That would be .... John O'Shea #3 - Legend for Ireland and Manchester United, has even played in goal for United: and of course scored the winning goal against Liverpool at Anfield last season:
Darius Vassell is a pretty good player, but I don't think he qualifies for Ireland. You may be confusing him with Clinton Morrison.
Please tell me you meant to put a wink or something in there Please tell me also that you know who that is
Steven Ireland is actually Irish gtfo!! you mean hes not from any other Brit county thats not his last name...ie Gary Wales is Scottish