We are not going to get this great football infrastructure in place before the new season. ETH knows what he's doing (hopefully) and has identified players that will mean we're able to execute his gameplan more effectively.
FDJ is considered one of the best midfielders around (not least by the new manager) and we need a player like him, so it makes sense.
Like you, I don't have a lot of faith in the club but the current priority has to be to get ETH in the best possible shape for the new season and go from there. Previous windows were more scattergun, we've said from the start the priority is FDJ and that has been the focus.
I'm not sure he's that much of a holding midfielder, ETH himself said previously he's too attacking for that.