There is a still a concern that Britain may leave the European Union without a deal to smooth the way, the bloc’s chief executive said on Saturday, urging Britain to take advantage of a six-month delay to work out the details of its departure. European Commission President Jean-Claude Juncker made the comments in an interview with German newspaper FUNKE Mediengruppe, a week after EU leaders gave Britain six months more to exit the EU. “Nobody knows how Brexit will end. This is creating great uncertainty. There is still a fear that there will be a hard Brexit without any withdrawal treaty arrangements,” Juncker said, citing the long-term negative impact on Europe’s economy. Even though the extension to Oct. 31 offers little clarity on when, how or even if Brexit will happen, Britain should use the time wisely, he said. “I hope that the British will make use of this time and not waste it again. We cannot keep on putting off the withdrawal date indefinitely. The best solution would be for the British to adopt the Withdrawal Agreement during the extra time that has been agreed,” Juncker said. The withdrawal deal negotiated by Prime Minister Theresa May with the EU has been rejected three times by the British parliament. Juncker, who is scheduled to meet US President Donald Trump at the G20 meeting in Osaka in June, predicted a “lively discussion” ahead.