I think we should play the diamond even versus big teams. The only difference I would make is that instead of 2 strikers we should play with one (RVP/Falcao) and a player in a free role, like Ronaldo in Madrid. It could be Rooney, Mata or Januzaj depending on who play as No.10.
De Gea/Lindergaard
Rafael/Valencia - Jones/Smalling - Rojo/Evans - Shaw/Blackett
Blind/Carrick
Herrera/Fellaini --- Di Maria/Fletcher
Mata/Januzaj
Falcao/RVP - Rooney/Januzaj (free role)
But if we continue playing with wide players I wouldn't play 4141 or 433. I prefer to play 4231 becuase it allows Di Maria/Mata/Januzaj to play wide and centrally. Mata used to play really well in that position at Chelsea.
De Gea/Lindergaard
Rafael/Valencia - Jones/Smalling - Rojo/Evans - Shaw/Blackett
Herrera/Fellaini - Blind/Carrick
Mata/Januzaj - Rooney/Mata - Di Maria/Januzaj
Falcao/RVP
Which formation do you prefer?