Re: playing 4-3-3 as a system, I understand that this is common practice in quite a few youth programmes globally for the reason that it is the simplest system which is suited to possession football, as Martyn has alluded too. Good write up about that here: https://soccertofootball.wordpress.com/2016/12/27/...
Isn't 4-3-3 recommended in the Whole of Football plan? Or did I imagine that?