quote from the counter formations thread:

3N-4-3 -> 4-3N-2(AML/AMR)-1, 4-4-2 Classic, 3-5-2, 3-2-2-2-1 Butterfly.
and another quote from the how to win against any formation thread:
3-4-3

---ST-ST-ST---
----------------
ML-MC--MC-MR
----------------
---DC-DC-DC---

Some managers like to go for broke and play all out attack and a formation that does this is the 3-4-3, fortunately for us, this is a formation that is very easy to counter and formations like 3-5-2, The 3-2-2-2-1 Butterfly and even simply the 4-4-2 Classic can easily deal with a formation such as this.

the problem is that you will need either MR + ML or AMR + AML, so i guess u have to heal one of your injured players. But u have enough healthpacks, i think u should use them. This is easily the most important match for you (if you wanna win the league, if you only want to get top4 ... whatever^^)

And set your win bonus to maximum. dont know if it really helps, but i think u can afford a few k$