Former Economy Minister Roberto Lavagna is credited with playing a key role in Argentina's recovery after its $100 billion default in 2001.
He said Tuesday that a "strong restructuring" of the Greek debt is the way to help Greece come out of its crisis and avoid conflict within the European Union.
Greece is in a financial limbo now that its bailout program has expired, cutting it off from vital financing and pushing it one step closer to leaving the euro.
The country has put limits on cash withdrawals in order to keep banks from collapsing.
