It's variation of 3-2-3-2. I suggest you 4-4-2 diamond. Normal mentality, through the middle, mix passing, zonal marking with normal tackling. No counter attack/offside trap. Id guess, he is playing defensive with counter.
3-2-3-2 is actually a variation of 5-3-2 or 3-5-2. No actual need to play only through he middle, I can see your thought, though. With only 1 player on each flank he can push from flanks as well if he has both wingers and fullbacks.
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