Alfie situation was no one's fault, so to speak. Certainly not Murray's or even Melnyk, to a certain degree.
Alfie knew his career is coming to an end, and he wanted to win a CUP, which was not going to happen in Ottawa, given the fact that the clock was clicking on him. Hence, he chose to go else where and try to win a Cup.
Now, you can blame this on management and the Owner, if anyone so chooses to, in failing to put a Cup contending team, where Alfie wouldn't had to utter his infamous quote "Probably, not"