However, the expatriate marketing guru took to his Twitter page to show appreciation to the club and urged them to beat arch-rivals Asante Kotoko in his absence.
"Thank you to all the True
@HeartsOfOakGH (you know who you are) who made our time in Ghana special. I sincerely appreciate your support and will miss you all dearly. Until we meet again, I am most grateful for the memories. #AHOSC #BeatKotoko"
Noonan officially began his duty in March 2018 with the task of reviving a club's fortune and image.
He supervised several recruitments at the Club including the appointment of former Ghana international Kim Grant as head coach for the side.
Mr Frederick Moore replaces Noonan as the new CEO. He joins the Rainbow family from AJS Consulting and has previously worked as the CEO of the Institute of Chartered Accounting.