I studied my CL final opponent a bit more, and found out he is probably not that tactically limited... he always shows the same formation (4-1-2n-2n-1) but actually his two AMCs are AML/AMC and AMR/AMC so he can swap to V-style anytime without subbing in new players... looks hard to defend against that. I actually think thats pretty cool (I call it "the scissors formation"), I wish I had players like that at that quality (both 6 stars, on has shadow striker). Unfortunately, I dont have an DR/DMR so I cant adapt my defense to that flexibility, plus Id need pretty good reactions for that, as he can swap as often as he wants.
Will man-on-man marking help against those formation swaps?