4-2-3-1 is equal to 4-3-1-2. DP will play forward anyway.
4-3-3 - that's good variant, but now rou midfiel play mch better then strikers , so we have to use that. But when DV and Trez will be on form 4-3-3 look possible for me. and Zamby-Tacchi-Davids in the middle, Neddy - to rest.