Keegan made his first move into management under Sir John, and no-one will ever forget the lift he gave the club ... and the city ... when he first arrived as a player in 1982, then manager in 1991.
Will it happen? Watch this space.
Sir John Hall: "Glenn is one of the most honest and sincere men I have met in football and I have the highest regard for him. He has got Newcastle United in his heart and he feels the anguish the same as the supporters when results are not going our way.
"I am sure Glenn will get it right, but he needs the strength of the fans to get him through.
"We have also got to look at ourselves and may appoint a director of football to take some pressure off the manager and make sure we take advantage of modern technology."