But that's exactly why we need a DOF.
Someone, who actually fully concentrates on football matters only and is an expert at that job.
Like
@Invictus said, it could maybe also lead to our boardroom doing a better job, since they could focus on the business part. They wouldn't have to deal with the scouting department, identifying talents or negotiations with agents and players, which obviously isn't their strength, as we can see.
Ideally the boardroom does everything business- and markting-related (which is a ton of work btw) and tells the DOF exactly how much money he can spend and what the limits are. The DOF then does everything football related (a lot of talking to the scouts, developing a list of "United-players", innitating contact to the players/agents, negotiating a deal with them and the club etc.) and presents the finalized deals to the boardroom, who then just say "yes" or "no", and it's done.
That's how many successful clubs operate.
In my opinion there is a clear reason why clubs like Dortmund always seem to identify and sign gems for cheap (Dembele, Pulisic, Sancho, Haaland, Bellingham, Reyna etc.), while we spent £183 million on Maguire, Fred and AWB.