However, Yildirim told foreign media representatives on Saturday that Assad has no place in Syria's future.
The Turkish prime minister also said that Turkey would aim to become more of a regional player with regard to Syria in the next six months, AP reported.
On Syria's future, Yildirim said Turkey would not allow the country to be ethnically divided and favored a system in which all ethnic groups are represented.
Turkey is one of the main supporters of militants fighting to overthrow Assad, and hosts more than 2.7 million Syrian refugees.