The managers will of course input, but - in his own words - Brands has to sign off on them.
I'm like a stuck record but take Godfrey - Ancelotti hadn't heard of him. Doucoure, we tried to sign him before Ancelotti, then we signed him after Ancelotti. Sure, Allan/Rodriguez only happen because of Ancelotti, but they don't happen without Brands' saying so.
Josh King? Clearly, Ancelotti never wanted him - but he still come in.
I think it's simple, me. There's collaboration between the manager and DoF, but we have to say all signings come in with Brands' thumbs up and endorsement. We have to give him the credit, as well as the criticism. It's disingenuous to claim the bad signings was down to Moshiri or Kenwright.