City conceded the fewest goals but we weren't far behind. The problem is the goals conceded column was helped massively by De Gea.
Saves 2017/18
Top 6 goalkeepers
David De Gea - 37 games - 115 saves - 28 goals conceded - 4.1 saves/goal conceded
Petr Cech - 34 games - 91 saves - 48 goals conceded - 1.9 saves/goal conceded
Hugo Lloris - 36 games - 86 saves - 35 goals conceded - 2.5 saves/goal conceded
Thibaut Courtois - 35 games - 76 saves - 34 goals conceded - 2.2 saves/goal conceded
Ederson - 36 games - 58 saves - 26 goals conceded - 2.2 saves/goal conceded
Simon Mignolet - 19 games - 36 saves - 25 goals conceded - 1.4 saves/goal conceded
Loris Karius - 19 games - 31 saves - 13 goals conceded - 2.4 saves/goal conceded
We can't rely on De Gea to keep bailing us out all the time and I think Mourinho knows this hence why we've been after a third CB in three years.