Asked whether hundreds of thousands of refugees in Turkey would head to Europe if the EU did not grant Turks visa freedom from October, he told Bild newspaper's Monday edition: "I don't want to talk about the worst case scenario - talks with the EU are continuing but it's clear that we either apply all treaties at the same time or we put them all aside."
Visa-free access to the EU - the main reward for Ankara's collaboration in choking off an influx of migrants into Europe - has been subject to delays due to a dispute over Turkish anti-terrorism legislation and Ankara's crackdown after a failed coup, according to Reuters.