'"I have enjoyed my time with the club but, although I do not have any immediate plans, I have decided to move on."
Doesn't sound like he enjoyed it at all. Not like a footballing man to move on with no immediate plans. He must have hated the job in fact.
At least the leaving has been resolved quickly. We're not even halfway through May. Need to get a successor in sharpish though so he (or she!) has maximum time to try and put something together and the 'Time To Gel' can begin. Tall order though.