The tactic was used across around 90% of my debut season as Manchester United manager on my FM21 series Taming The Devils on my YouTube channel; LSPlaysFM!
The tactic itself managed to win me the Quadruple and dominated teams whether large or small. The tactic itself focuses on counter attacking play primarily and being defensively strong, however it is also incredibly powerful when attacking also. Using this tactic in the Premier League with Manchester United, I finished the league season with a goals for and against ratio of 103 - 22 over the course of the 38 games as you can from the below screenshot.
The tactic itself does require to have a pacey striker and decent wing backs, but with those in your team, I have found this tactic to be superbly powerful in FM21. I have even used a very similar variant to it in my Twitch save with Norwich City which has also seen very similar results with us qualifying for the Europa League after only 2 seasons in charge.
To help explain the tactic and how it works, I also created a video which runs through the tactic and exactly how well it did. If you would like to take a look at this then please view the video below:
Please feel free to download and use the tactic file provided via the download link and I hope you get a lot of good fun and enjoyment out of this tactic on FM!
If you would like to take a look at my other content such as my FM21 Experiment Videos or my FM21 Tutorial videos, then please do also check out the links below for my various playlists and my channel where I release content at least 3 times a week regarding FM21.
FM21 Experiments Playlist:
FM21 Tutorials Playlist:
Finally, you can also find me over on Twitch where I currently am doing my Norwich City save. We are about to begin our 3rd season at the club and are already in Europe. Come join us via the link below and drop a follow on the channel.
Hope you enjoy the tactic guys, and of course if you have any questions, do feel free to ask.