Born in Newcastle upon Tyne, Annan moved to the United States and began coaching in the Atlanta, Georgia area.
[1] In December 2016, it was announced that Annan had joined new expansion Major League Soccer side Atlanta United as the club's academy director.
[2] Annan was taking over from Stephen Glass, who was promoted to interim head coach of Atlanta United after Frank de Boer left the club.
[3] From 29 July 2020 through 4 October 2020, Annan coached Atlanta United 2 to a record of 3 wins, 2 draws, and 7 losses.
On 22 April 2021, Annan was named head coach of the men's soccer team at the University of South Carolina.