4-4-2 classic : vote for counter formation

[Irie_Ites]

this season i`ve played 1 game against 4-4-2 classic, i won 0-1,but opponent was much much weaker than mine. Btw my next game against 44-2classic(pretty strong 1) away and i m goin to play with butterfly,any advices guys?i`ve never tried this tactic before, so i`m a bit afraid for the resssult