As much as I love the Zlatan confirmed trope, I'm not sure he is our best signing. When we signed Pirlo we created a situation where we had two DPs Pirlo/Lamps who didn't fit well together. Doesn't Zlatan/Villa do the same thing? Don't they both want to play the same position?
Would have to change formation to 4-4-2 or play Villa deeper in a 4-2-3-1, personally they should use their DP on a Centre Back (when Lampard leaves), Villa and Zlatan like to be the end product of a play (build up) you could put Villa on the wing but you be wasting a talent, why would you sacrifice your best player for someone else to come in