Meanwhile, the Czech Republic, Hungary, Poland and Slovakia pledged to help Greece to deal with pressure along its border.
Speaking after meeting his counterparts from the other three countries, Czech Prime Minister Andrej Babis said the situation was serious and the EU must protect its borders.
"We’re ready to help," Babis said.
Polish Prime Minister Mateusz Morawiecki said his country was ready to deploy guards at the Greek-Turkish border, while his Slovak counterpart Peter Pellegrini said the growing number of migrants "poses a security threat not just for Greece."
Hungarian Prime Minister Viktor Orban said that there are some 130,000 migrants on the move that the EU has to stop on its borders, and that "Hungary will take an active role in doing so."
The four countries have been known for their tough stance against migrants and rejected an EU plan to redistribute refugees in member states.
Meanwhile, European Council head Charles Michel was meeting with Erdogan in Ankara Wednesday, while EU Vice President Josep Borrell and Commissioner for Crisis Management Janez Lenarcic were holding talks with Turkish Vice President Fuat Oktay.Speaking to reporters after a meeting with Erdogan, Borell said that the EU delegation asked Turkey "not to encourage the further movement of refugees and migrants toward the EU borders."