The DOF isn't the one supposed to implement something like that himself, he is the one bringing the people that will do it, Murtough is an analytics man, that has worked as a head of recruitment and a head of development. On paper he is perfect for the DOF role, he has the kind of background that you rarely see from a new DOF, unlike most he has experience in the other key roles that are under his responsibilty. He could fail for other reasons such as failing to take the right decision at the right time but his profile shouldn't be questioned.
And the reason things aren't necessarily clear regarding Rangnick potential role is simply because the club is still restructuring, we do not have existing roles that just need to be filled, he could also be the link between the board of executives and the DOF which isn't really something that has a clear label but exists in sport. I also want to say that it's not uncommon either for a while Cruyff was an advisor at Ajax, same with Nedved at Juventus, Zidane at Real Madrid, Lacombe at Lyon(in this case he was the most important person outside of Aulas) and others.
