4-3n-1-2 is not good tactic for my oppinion but it counters 4-5-1 V style.
So you can try 3-1-4-1-1.With three DC's and one DMC you're good at defending,including stopping his AMC.With ML,MC,MC,MR you have good ball possession and attack him from the flanks,cuz he hasn't.With your AMC you're filling his hole on the pitch,cuz he hasn't DMC.One Striker is enough.