This tactic is somehow a replica of his positional play during that period. The tactic is sort of plug and play, but some good technical players does not hurt. I've only been rebuilding Barcelona so haven't tested it on other teams.
First season was shit, almost got sacked for testing the tactic to long and finding the right balance was difficult.
My second season I won the league, champions cup and the Spanish cup
If you are having problems with possession, try going up or down on the mentality.
I don't use any OI, and I use RDF`s training method for FM 21.
With the ball:
Without the ball: