Depends what season you are in, do you want the best players in each position right at the start of the game or youth that have the potential to be world beaters in 2-3 years?
GK- David de Gea
CB-Phil Jones, Raphael Varane
LB- Fabio da Silva
RB- Rafael da Silva
CDM- yann M'Villa
CM-Cesc Fabregas
AMC- James Rodriguez
AML- Mario Gotze
AMR-Hulk
ST-Aguero
gk tim krul or David de Gea
rb kyle walker
cb martin kelly phill jones
cb Raphael Varane
cm fernaando or Cheick Tioté or Marco Verratti
Aml James Rodriguez
amr robin van persie
st rooney or messi or ronaldo
st sanogo