Depends on a clear definition of what they are responsible for.

If its supporting recruitment, negotiating new contracts and running the academy and not interfering with the first team then I would be open to it if they were the right person.

If its like the last person who was effectively the CEO of the whole club and forcing players on the first team, selecting the managers etc.  then I would pass on the idea 

Macbonzo wrote:

In a word no.

Essentially a SD sits between the Chairman and the head coach or manager. He has the authority to dismiss the latter. His role extends beyond recruitment to encompass the philosophy of the club. German clubs favour SDs, but, notably these people are invariably ex players who have achieved near legendary status in their playing careers.

The position is not to be confused with that of Director of Football whose remit is much narrower and less powerful.

For a club, United’s size, I don’t think either role is relevant. A decent manager and CEO is more than adequate.

 
Yeah, I agree with Macbonzo..
It's getting the decent manager that has been the problem but looks like we are heading in the right direction now but still early days.

Cannae see it.
Ogren's had hes fingers burned wi middle men.