jayarl
Shout outs to ZaZ and Baz for this one. Whilst I haven't seen Baz's tactic before we have exactly the same attacking formation and player roles, thankfully the defensive side is different, but interesting that I have stumbled across the same attack by chance. ZaZ once again provides most of the team instructions in attack and defence.

This formation looks to flood players forward attacking with effectively 9 players. Overwhelming pretty much any defence. Going the other way the side drops into two flat banks of five very deep looking to limit as much space as possible. Once the ball is recovered a counter will be effected and players will flood forward running in just about every direction you can think of to confuse and overwhelm the opponents.

Tried this formation with Liverpool in the English Premiership winning the Premier League, FA Cup, Carabao Cup and Community Shield. Losing in the semi-finals of the Champions League to Arsenal 5-4. This formation also won England the World Cup.
Portugal too
It also gets France over the line as well. Beating England in the final
First up a shout out to ZaZ, the base of this tactic is their tactic ZaZ Autumn 3.39 ST. None of the team instructions have changed from that tactic. I have however moved players into different attacking and defensive positions along with changing the team mentality to cautious. This changes how the tactic functions in both phases of the game.

Looking to have a compact line of 6 protecting the back 3 in defence as opposed to dropping players to full back like in other tactics allowing for an easier way to move the ball forward on the turn over. Playing cautious rather than attacking looking to utilise the counter rather than to hold possession outside the opponents box. With the advanced playmaker and the free role these two players will cause chaos for defences with 4 options to create a goal scoring opportunity. The wide forwards running in on the angle tie up the wider defenders with the second striker looking to go down the middle. The box to box midfielder arriving late can find holes as even a back 5 can get over run in transition. 

I have run the tactic with Liverpool in the English Premiership and with England in the World Cup mode. Both have had success. Liverpool winning the Premiership with 92 points and the champions league including hammering PSG in the final 4-0, and England winning the World Cup.