No we don't know four or five. Unless we are believing the papers? We have NO idea what goes on behind the scenes. Fr all we know he may have said get me one of Ronaldo, Messi, Neymar, Suarez or Griezmann.
There may be someone we want who was not willing to leave in a World Cup year but may be interested next year (he wont now...) so instead its better to wait for him rather than buy number 7 on the list.
You can say it as much as you want, it doesn't make it any more true! (I am not even saying you are wrong, just that you have no idea if what you are saying is true.)
I don't blame Walsh at all as I don't know what his role is fully. Koeman buggering off on holiday in both windows probably did not help but whatever.