I am not sure which formation José would choose but I think the 4231 suits Man utd best. I think the 2 midfielders should consist of one passive player (Carrick, Schneiderlin, Blind) who can dictate the game and play creative passes - and one active player (Herrera, Schweinsteiger, TFM, "Matuidi") who can create room and link well with the players. Which other player would be an upgrade for our midfield? Who should go?