It won't let me post links which is frustrating because i want to share my success with this tactic. I am playing an online (network) game managing Leeds - I am 5 seasons in. This tactic (The Knap 4-5-1) has been by far the best tactic i've used on this iteration of FM. I have used many different tactics mainly based around a 451 - The Dev v1, v2, v4, v8; Sirgoalalot, Mahluk (which had some success as a weaker team) and Suksam, I even used the Dam-buster in another save which i didn't find much success with.
I was able to win the league last season comfortably and lost the CL final; this season so far through to March I have not lost a single game in all competitions,Icardi is currently the WPOTY and reigning golden boot winner and my defense has conceeded only 10 goals in 25 games so far in the league.
imgur,com/dNkoLVU
imgur,com/z215s6n
This tactic deserves quite abit more attention, i have replicated it so far in fantasy draft games but haven't played anothe rlong-term save with a 4-5-1. I find it much, much more consistent than the other more popular tactics