I'm playing against this formation in 2 days time.

I would use 4-5-1 v but his ML and MR might cause some problems. I am going to try and risk and say play the WM. Extra marker on his wide midfielders by playing 2 DMCs.

-----ST-----
AML------AMR
---MC-MC----
--DMC-DMC---
DL---DC---DR

Normal mentality, down both flanks, pressing own half, mixed passing, zonal marking. Rest is up to you but don't play offside trap.

If you don't have 2 DMCs then you can probably play a DC in that position and get away with it

Let me know how this goes for you