Mr. Zaman has been serving as Deputy Foreign Minister for Political Affairs since October 2018.
The Office of Chief Executive Abdullah Abdullah yet to make a comment in this regard.
His new appointment comes days after resignation of former Acting Foreign Minister Salahuddin Rabbani.
Rabbani had tense relationship with the presidential palace during the last couple of years.
In his resignation letter to President Ashraf Ghani, Rabbani said that the foreign ministry had been sidelined and that it was treated as a private NGO.