We’ve been playing a 433 but on the pitch with Allan playing a deeper holding role, it’s more like a 4123.
But I think you can get caught up in the semantics of the formation to much, for me you firstly focus on your defence and the introduction of Allan as an organiser and protector has made our defence look quite solid.
Then you have your central striker and mids with the 2 wide men, but for me when you’re defence is sound the rest is interchangeable the 5 in front of Allan can play with more freedom move positions and formations it becomes more free flowing, and keeps your opponent’s guessing, well that’s how I see it.