I think as long as they are clear who is making decisions, theres no issues. I feel like the issues happen when its not clear whos responsible for pulling the trigger. Theres a lot of work in transfers, and it always seems to take us forever to get any across the line as we move so slowly. Having more people, and thus less work per person seems a good idea on paper.
My understanding is Kinnear is the head and decision maker as to which players to purchase. Hammond is under him, in charge of negotiations. What Purdy would have been doing, and the role they are now trying to fill under Kinnear, is identifying players. So the idea is two people, Hammond and the New Guy report directly to Kinnear. Players are identified by the New Guy, he brings them to Kinnear, who decides on which players they will attempt to purchase, and then Hammond will go to work negotiating the deals.