Tummy, what roles are you playing Cleverley, Anderson and Fletcher? And what formation are you using? I've gone with the 4-2-2-2 I used in FM11 (4 defenders, 2 MC, 2 wingers and 2 strikers).
I'm playing a kind of 4-4-2.
Berba and Rooney up top, Anderson and Cleverly in the middle (or Fletcher) and Nani / Young first choice wingers with Valencia / Park being rotated.
Back four, Evra / Vidic / Jones and Van De thingy that I bought in (doing really well) with the entire back four being rotated with Fabio / Rio / smalling / Rafa.
De Gea first choice but only playing in the League and Europe.
I'm playing Cleverly as a much more attacking player, guess a bit of a play maker, and anderson / fletcher just doing leg work.
When Cleverlys out, I still play fletcher or Ando to do the leg work but play Carrick as a deeper play maker.