Let's be real. If we hire Mazzarri it's not to win the CL. It's just to make top 4 and play some exciting football in our new stadium. This is the "transition period". The same period that was supposed to happen the past couple years but whatever, the objective is still the same.
Even by playing 3-4-3 with the same fucking players we have, we'd do better than under Del Neri. FFS, when he starts Motta we're basically playing a 3-4-2, so a 3-4-3 is an improvement.