Earlier this week, Irish media reported the Croke Park will not host a football game between Georgia Tech and Boston College. The report said negotiations had been at "advanced" stages but potential scheduling conflicts with Irish sports, not enough support from the Irish government and the falling value of the euro vs the dollar all undermined the game.
There are other potential venues that could still host a game in Ireland, but if currency and government support issues are problems, they are going to be problems in any stadium. ESPN might up payout in hopes of getting a morning game, but I doubt that will be enough. It looks like this will be held in the U.S. after all.
(Thanks to Morrissey for the link.)