Belgium's finance minister is one of the first eurozone ministers to react to an official projection and opinion polls that the "no" vote will win in the Greece referendum, saying it will complicate matters.
Johan Van Overtveldt insists, however, that the door remains open to resume talks with the Greek government "literally, within hours."
He told VRT network on Sunday that the eurogroup of 19 finance ministers can again discuss measures "that can put the Greek economy back on track and gives the Greeks a perspective for the future."
Greeks voted on its financial future, choosing in a referendum whether to accept creditors' demands for more austerity in return for rescue loans or defiantly reject the deal. Final results are expected later Sunday.