According to the Anadolu news agency, Washington made the announcement during the meeting of the Turkey-US joint working group aimed at coordinating the US troop withdrawal from Syria.
The meeting was focused on the situation in the northern Syrian city of Manbij and Syrian territories to the east of the Euphrates River, the media outlet specified.
The Turkish side firmly opposed a possible transfer of former US bases to militants from the Kurdistan Workers' Party (PKK), listed as a terror group by Turkey, after the US withdrawal, saying that they either must be destroyed or handed over to the Turkish military, the news agency added.
Ankara claims that Kurdish militias operating in the north of Syria pose a threat to Turkey's security. In January 2018, Turkey launched a military operation in the northwestern Syrian city of Afrin against the US-backed Kurdish People's Protection Units (YPG), which is regarded by Turkey as an affiliate of the PKK.
Damascus, in turn, categorically opposes the presence of either the Turkish or US military on Syrian territories to the east of the Euphrates River.