EU Commission President Jean-Claude Juncker announced during a debate in the European Parliament on Wednesday that he believed the risk of a no-deal Brexit is still "very real."
"Time is running out," he told the plenary debate on the topic of the UK's so-called divorce deal with the European Union.
Juncker met UK Prime Minister Boris Johnson in Luxembourg on Monday, the first time the two have engaged in formal negotiations since Johson became prime minister in July.
Johnson remains optimistic that the UK will exit the EU on October 31 with a deal, but he has repeatedly vowed that Brexit will happen on this date even if no deal is agreed and despite a British law requiring him to request an extension of the Brexit deadline if no deal is agreed upon.
Juncker also told the parliament, "A no-deal Brexit might be the choice of the UK, but it will never be ours."