A while ago i encoutered a 4-4-2 in cup , first leg i used a 4-3-2(AML/AMR)-1 and i lost 5-1 , for the second leg i countered him with a 4-1-2-1-2 narrow diamond , i beat the crap out of him 7-0 ... So i'll definitely recommend you a narrow diamond !
As orders i used attacking , short pases , trough the middle , press own half , normal tackling , zonal marking , no counterattack no offside. Good luck !