Feliz Zulauf, gestor de investimentos suíço (via Business Insider):
Then I expect next year one country, probably three, will exit the euro. That will make 2012 very interesting because there are no rules on how to exit the euro. A country exiting the euro means the next day, when they exit, their banking system is bust. That means the banking system has to be immediately nationalized in a new currency.
They introduce a new currency, they nationalize the banking system, and then, of course, the government is also bust. Then the government will default. That’s what you have to expect next year. I think Greece will do so and Portugal and Ireland are candidates also