Whaley's. It was under Whaley's infrastructure.
The way it most likely went down, McD communicated to Whaley all the prototypical sort of players he is looking for out of each position, Whaley created a list of the top prospects of the mold that McD wanted, created a draft board based off of the sort of player that Whaley scouted. McD reviewed and together they most likely agreed on certain players and early on decided he had a few players that he believed would be available after a trade down with the Chiefs and when the Bills went on the clock, White ended up being the top guy on the board when they picked.