The problem with 4-4-2 is that we'd get over-run in midfield, and Song has already shown in the past that he isn't mobile enough to play in a central 2 next to Cesc. it would also take away from Fabs ability to join up with the other attcking players.
My system gives us the defensive security of always having an extra player back - which is nominally what Song is supposed to do in the 4-5-1 / 4-3-3 but somehow hasn't quite got it down to a tee yet. Song can then still do a defensive midfield job but with added bonus of having cover should he get caught upfield. Similarly, TV covers the left back and Gallas the right when they go forward.
The formation would look like this:
---------------------------------Goal-Keeper--------------------------------------
---------------------------------------Sol------------------------------------------
-----------------------Gallas------------------------Vermaelen------------------
Sagna--------------------------------------------------------------------Clichy--
--------------------------------Cesc-----------Song-------------------------------
---------------------Rosicky-----------------------------Arshavin----------------
-------------------------------------Bendtner-------------------------------------
Arshavin and Rosicky would have the freedom to move left or right and Cesc the space to go forward to join the other attacking players.
