I don't think that's how it worked at Sevilla either.
I guess that Emery evaluates the squad, decides what he's missing, and then he takes that to the head scout along with any names he personally wants. The scouting department try to find players that suit the team and return a detailed briefing on each one. After that Emery picks who he wants and it goes to the negotiating team, and if they can't get that player they move on to the next target, and so on. It's not Sven sitting in a building by himself and just signing players who Emery then has to squeeze into the team.