Christian Purslow is to stand down as Managing Director of Liverpool Football Club with immediate effect.
He will remain as a non-executive director and an advisor to New England Sports Ventures.
NESV Chairman Tom Werner said: "We are delighted Christian has accepted our offer to help us and the club, given his great experience and love for Liverpool FC.
"We will now begin a global search process for a Chief Executive Officer."
Purslow added: "I came to LFC to lead the club through a sale process to get the best overall deal including, vitally, the removal of the debt. I am immensely proud of what we have all achieved.
"I now look forrward to assisting the owners in any way I can at this exciting time as they drive the club forward to a bright future."