Narrow 4-3-3 with offensive fullbacks and Carrick playing as DM.
-------------- DDG -----------
Rafael - Smalling - Evans - Evra
------------ Carrick ----------
-------- Mata - Kagawa ------
--- Januzaj - RVP - Rooney ---
I think it could work well, given that the instructions are to move around a lot and interchange, while pressing high. When Mata drops deep to help out Carrick and Rafael(for instance), Kagawa remains in a slighly more advance position, and the other way around. Let's say we're overrun and RVP drops back to help out Kagawa and Mata. It will then open up for Rooney and Januzaj to make runs, either by cutting in or running down the wing.
1. Intense off-the-ball movement
2. High pressure
3. Guts to take risky passes
If we have these 3 things, then I think the formation above could work. And when the summer comes, we sign two CMs and a leftback, and change back to 4-2-3-1, with either Mata or Kagawa behind the main striker.