I just train people in the roles they would be more suited to in formation. I try and put the mezzala on def positioning/attack possitioning since his whole job is to defend higher up as well as create overloads in the right half space. So off ball and positioning help
Loosely based on a Pep Guardiola system (New idea I know) this system uses a False 9 to bring into play attacking wingers and midfielders using a half back to prevent counter attacks.
The idea is to create a 3-2-5 in attack like Jurgen and Klopp do whilst also trying to pander to the game...