Jean-Claude Juncker "will indicate the route to follow, I hope everyone will commit themselves to a way of compromise," Pierre Moscovici told French radio, adding there was still "room for negotiation" between Athens and its international creditors.
Athens was "a few centimetres" away from a deal when talks broke down over the weekend, Moscovici said.
"We must continue to talk," Moscovici said, adding that "the door is always open to negotiations."