The head of Greece’s biggest bank has said it would be “insane” not to reach an agreement at emergency talks on Monday on the country’s debt crisis.

Greek Prime Minister Alexis Tsipras will meet the leaders of the 18 other eurozone nations at a Brussels summit.

Louka Katseli, chair of the National Bank of Greece, told the BBC that banks were not under immediate threat of running out of money.

But she said the situation was serious, and without a deal would become severe.

Her remarks came as Mr Tsipras presented a Greek proposal for a deal during a conference call with German Chancellor Angela Merkel, French President Francois Hollande and EU Commission President Jean-Claude Juncker.

“The prime minister presented the three leaders Greece’s proposal for a mutually beneficial agreement that will give a definitive solution and not postpone addressing the problem,” Mr Tsipras’s office said in a statement.