My Asymmetric formation tweaked from the total football concept but with a stronger six man FM.
It can be played with either DR or DL.
Played with DR:
DR-----DC--DC
----DMC----------DML
MR----------MC
----AMC----------AML
----------ST
Played with DL:
------DC---DC-----DL
DMR----------DMC
------MC-----------ML
AMR----------AMC
---------ST
Works well in countering most flank attack teams, don't try it against 3 x Strikers. It's also not been used against 4-1-3-2.
For me it has also worked reasonable well against the narrow diamond.
Not a bad formation for when the game engine takes a chunk out of your MC's with injuries.
With the right duel positions the whole outer circle of players can be rotated clockwise or anti clockwise to cover any injured player with just one sub.
GK, MC and striker are the ones you need as direct replacements the other take your pick.