Turkey has once again threatened to scrap a refugee deal it has struck with the European Union (EU) unless the bloc grants visa-free entry into Europe to Turkish citizens by October.

Speaking in an interview with the German Bild newspaper, which was published on Monday, Turkish Foreign Minister Mevlut Cavusoglu implied that hundreds of thousands of refugees in Turkey would be allowed into Europe if Turks were denied free-visa travel by October.

“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,” Cavusoglu said.

“It can’t be that we implement everything that is good for the EU but that Turkey gets nothing in return,” he added.

The agreement that Turkey is threatening to scrap was signed in March. Under the deal, Turkey has committed to taking back all the asylum seekers and refugees who have used the Aegean Sea to illegally reach Greece. In return, Ankara has been promised a number of things, including the acceleration of visa liberalization talks but not visa-free travel itself — at least not yet.

Turkey has been negotiating a sub-deal to obtain that privilege for Turks.