It should be 4-3-1-2, this formation suit us most, bearing in mind players we have now, with abundance of quality strikers and lots of CMs/DMs, even without regista - Mourinho doesn't play with one as well. Turning to 4-2-3-1 woulnd't be reasonable at this point, since we missed on Guberti and therefore would probably keep Marchionni. Not to mention Trezeguet, Amauri and Iaquinta fighting for one starting spot and Del Piero on the sidelines.