The latest on the fallout from the Greek referendum (all times local):

8:40 a.m.

Germany's EU commissioner says he's optimistic that a new Greek finance minister and opposition parties' backing for Prime Minister Alexis Tsipras could smooth negotiations between Athens and its European creditors.

Tsipras' polarizing finance minister, Yanis Varoufakis, resigned Monday and was replaced by Euclid Tsakalotos. Three opposition parties offered backing for Tsipras in the bailout negotiations.

Commissioner Guenther Oettinger told Deutschlandfunk radio Tuesday that Tsakalotos "doesn't have the same attitude as his predecessor. He knows the figures, the facts, he knows our reform proposals ... and he knows that we are flexible."

German officials insist that, even after its voters rejected more austerity in a referendum, Greece must accept conditions for any new aid.

8:19 a.m.

French Prime Minister Manuel Valls says his country will do everything possible to keep Greece in the eurozone, saying its exit would be a "risk for global economic growth."

In an interview with the RTL radio network Tuesday, Valls denied that Grece's "no" vote was a rejection of Europe or its values but rather an expression of pride. He called on Greece's prime minister to put forward a plan and said France would be open to rescheduling Greece's debt.

Valls says: "The eurozone must stay coherent, reliable. Europe is not just a currency. It is a conception of the world."

Greek Prime Minister Alexis Tsipras is headed Tuesday to Brussels to negotiate a rescue deal with European lenders.