To be fair, i think under the new setup the scouting team and Richard Hughes was the one to identify the players needed and secure the transfer so not Slot that told them he specifically want Wirtz, Isak etc.
Slot as coach just handles the football side of things (training, tactics, player selection etc).
Based on the transfer stories, Wirtz chose us largely because of how slot plans to play him (thru the conversation they had).
But from what we see this season so far, slot doesn’t know where to play him best.