Honest to god i can't understand how a players pefromence drops sometimes when playing out of his postion
I am an U-19 football ,not an amazing one but fairly decent one,i played as a SW,DC,DR,DMC,AML,ST ,i simply changed my playing style to fit these positions,sure i was better at some then others ( i usually play as a winger or as an AMC), but still i didnt do as bad as some presumbly professional players do when played out of their position,i think vertisallty is something that youth players MUST be taught,simply because they will have to play outside their postion at one part of their careers,at least teach them the basic attributes needed to play in ever postion.
Anyway,i think it depends from one player to another,David Edgar is a CB/DMC, but did a fantastic job for us playing as a left back,while Duff as a striker,Emre as a winger never seemed to work,simply because they don't have the attributes to play in those positions,so Coachs should check if the play is capable of performing well when changing his postion,or is he the type of players that prefer to play in one position and one position only.