Irish Central Traditional bank governor Patrick Honohan has says he expects the American Republic to accept a "very substantial loan" as element of an EU-backed bail-out.
Mr Honohan advised RTE radio he expected the loan to amount to "tens of billions" of euros.
The ultimate decision will be up to the American authorities, which has nevertheless to comment.
Mr Honohan's comments come being a team of global officials encounter in Dublin for more talks around the debt crisis.
Representatives from the Worldwide Monetary Fund, the European Central Traditional bank plus the Eu will encounter the American authorities, which has denied that it has asked for support.
An EU handout could be seen being a large loss of encounter for your Republic - essentially which means that its survival and solvency was reliant on Brussels.
But BBC business enterprise editor Robert Peston says that when it comes to American resistance to your bail-out, this was "game over".
"The American authorities couldn't conceivably go against the advice of its [eurozone] partners and its central financial institution," he says.
Happen to be it to perform so, business consumers of American banks would accelerate withdrawals which might be devastating, he says.
BBC Ireland correspondent Mark Simpson extra that it may be "a fortnight till we see what these loans search like".
'Matter of sovereignty'
Meanwhile, French Finance Minister Christine Lagarde advised the BBC it was for your American authorities to determine no matter whether it wanted a bail-out.
European stock markets rose in morning trading as investors' self-confidence grew that an American rescue package would emerge within the coming days.
Foremost share indexes in London, Paris and Frankfurt have been all up over 1%.
Fears in regards to the stability of American banks has led to your increase within the selling price the American authorities - which has pumped billions into its banks - pays to borrow funds.
Other eurozone international locations that are also perceived as weak are seeing their borrowing fees increase as well.
The newest discussions in Dublin comply with a meeting in Brussels on Wednesday of European finance ministers.
The ministers says they'd not held thorough discussions on a possible bail-out for your American Republic - due to the fact the American authorities received not requested personal aid.
Without this kind of a request, no help could be provided, in spite of the wishes of some fellow eurozone international locations, such as Portugal and Spain, who would really like the situation to become settled so that you can stop problem around the personal markets.
The American authorities has stressed it does not should borrow funds for public wasting till into next yr.
Nonetheless it incorporates a gaping funds deficit and can shortly announce a different extreme spherical of wasting cuts and doable tax rises to plug the gap.
And also the country's banks have not long ago become heavily dependent on loans from the ECB.