Murphy became CEO at the City Ground in 2021 having previously held the position at Barnsley.

In a statement on the club's website Murphy confirmed his departure and thanked everyone at the club;

“Never have I been a proponent of, nor in fact, have I ever been any good at goodbyes. It is much easier to give thanks and recognize those who made my time at Forest so special.
“Nottingham is a community of people who put the work in before the talk. Who pour themselves into what matters most and commit to the genuine causes that allow them to progress. The unbridled passion for this football club, passed down through generations, reverberates throughout the sport. That passion is the true north that guides the players, the staff and all at The City Ground.
“I would be remiss to not acknowledge those who helped make my time at the Club successful. Thank you, first and foremost, to Evangelos Marinakis who allowed me to realize a dream I did not know I had. To Socrates Kominakis, Miltos Marinakis, and Chairman Nicholas Randall KC, thank you for believing in my stewardship.
"Finally, thank you to all the players, staff, and co- workers who over the last 18 months helped build the Club to where it now stands. Everyone should take great pride in the achievement.
“My gratitude for the welcome received, and the treatment of my wife and I by this community cannot be bound by words. It has been the honor of my second career to serve this Club and all of you.
“I’ll miss the mist rolling in the from the Trent. Forever and always, You Reds!"