Jurgen the German
Erik Thorstvedt
Italy played without wingers. We have Bale and Lennon. No formation in the modern era will work with both wingers and 2 strikers, it offers far too much space through the middle. Either you can play with 2 interiores as Villarreal did so successfully a few years back with Cani and Cazorla, or you can play a narrow 4 as Milan and Italy do/have done. And even then the strikers are going to be spending plenty of time in wide areas...
We by no means have to play a striker on the wing, I'm not sure how you've come to that conclusion. Bale on one side, Lennon/ another wide player who scores more goals on the other, Ade (hopefully) through the middle. Ade's backup doesn't have to be played on the wing for no reason (assuming we would sign another striker more similar to him).
Who even says we'll definitely play 4-3-3? What about 4-2-3-1 with VDV and Sandro deep and Sigurdsson ahead of them? I seriously doubt AVB is so tactically inflexible, he isn't a fool.
Well if we buy 1 or 2 strikers, then its going to be difficult to keep them all happy if we only play 1 of them.
4-4-2 may not be the preferred formation for most of the best teams, but I don't think it's "outdated" or that you can't win with it, as Man United have proven.