Euro 'house of cards' to collapse, warns ECB prophet

The European Central Bank is on a "slippery slope" and has in his view fatally compromised the system by bailing out bankrupt states in palpable violation of the treaties.

"The Stability and Growth Pact has more or less failed. Market discipline is done away with by ECB interventions. So there is no fiscal control mechanism from markets or politics. This has all the elements to bring disaster for monetary union.

"The no bailout clause is violated every day," he said, dismissing the European Court's approval for bailout measures as simple-minded and ideological.

The ECB has "crossed the Rubicon" and is now in an untenable position, trying to reconcile conflicting roles as banking regulator, Troika enforcer in rescue missions and agent of monetary policy. Its own financial integrity is increasingly in jeopardy.

The central bank already holds over €1 trillion of bonds bought at "artificially low" or negative yields, implying huge paper losses once interest rates rise again. "An exit from the QE policy is more and more difficult, as the consequences potentially could be disastrous," he said.

"The decline in the quality of eligible collateral is a grave problem. The ECB is now buying corporate bonds that are close to junk, and the haircuts can barely deal with a one-notch credit downgrade. The reputational risk of such actions by a central bank would have been unthinkable in the past," he said.