Don’t see how much he got wrong.
Shaqiri is the definition of a 1 in 4 player
Keita by all reports had a down year and would want to massively pick up his form this year to be worthwhile
Fabinho is a very solid but unspectacular DM/RB will help sure up your defence but won’t be a difference maker
Allison is a very good keeper and a big upgrade on current ones but it’s yet to be seen if he can be a difference maker he isn’t in your De Gea, Courtious, Buffon ect category yet.
VVD is a good CB find him a partner then it might help more
Mane, Firmino, Salah
Keita, Hendo, Fabinho
Roberson, VVD, Lolvren, TAA
Allison
Is your first team very good but let’s compare it to man city using a similar setup
Sane, Aguero, Sterling
Debryne, Fernandinho, Silva
Mendy, Kompany, Laporte, walker
Ederson
At worse it’s a like for like team now let’s compare second teams
Shaqiri, Sturridge, Llanana
Milner, Windalum, Ox
Moreno, Kalvan, Matip, Clyne
Karius
*assuming all are fully fit
Man city
B Silva, Jesus, Mahrez
Gundogen, Delph, Foden
Zilcheski, Stones, Otamendi, Danilo
Bravo
That’s vastly superior to your depth and is a big reason as to why city is much better.
You still haven’t replaced Coutinho big mistake and have nobody on the bench worth there salt outside your big three