Not tough...just spend spend spend!...
Make sure to mix youth with experience...
Here are some suggestions
GK Igor Akinfeew, Valdez(After he's recovered) and Scuffet
RB Danilo, Dier
CBs Balanta, Otamendi, Nkulu(don't know if i got it right), Jones
LB, Rodriguez, Gibbs, Shaw
CMs Tielemans, Pogba, Florenzi, Wanyama
AM, Depay, Hulk, Isco, Januzaj,
STs Beradi, Benteke, Barbosa
For backroom staff, i recommend tassoti as your assistant...If you can't get him, try albeck...
Both are great at giving tactical advice on who to close down, mark and so on