Sunderland chief executive Jim Rodwell has stepped down from his position following a takeover of the League One club by Kyril Louis-Dreyfus.
A protracted takeover was finally completed on Thursday after receiving English Football League approval.
"It was an honour to be appointed CEO of such an iconic club and I will always be grateful," Rodwell said.
"It will always be a sadness that I did not get to experience a full and buzzing Stadium of Light as CEO - but the supporters who I have met during my time in the city have only reaffirmed what a wonderful support base the club is so fortunate to have.