Right I have had a very successful save with Bayern and this was my tactic. It was a 4-2-3-1 formation with 1 DM and a CM.
I have made some transfers but it will work the same with all players.
If you are playing against weaker opposition or your DM are injured then have 2 CM or if you are playing a good team then possible play two DM.
Hope this helped, if you need any more advice do not hesitate to get in touch
Onwards and Upwards