Turkish Prime Minister Ahmet Davutoglu will not be briefed until Friday morning on the European Union's proposal for a joint migration deal, a source in Brussels says on condition of anonymity, with the bloc's leaders finishing the document.
EU President Tusk was previously supposed to hold talks with Davutoglu late Thursday in Brussels, after the leaders agree a common position. But that now looks "almost impossible," the source says, noting that the Turkish premier is not expected to land until after midnight (2300 GMT).
Only "minor" changes have been made to the proposed migration deal in the last hours, the source says.
Davutoglu, meanwhile, has rejected domestic criticism that the plan would turn Turkey into a giant refugee camp. "That is out of the question," he says, according to the Turkish news agency Anadolu.