About this chart, does this highlight it as being a weakness of ours?
It's true we had no penetrative creative midfielder last season in the main with Lallana injured, Chamberlain needing time to settle &then injury, Coutinho missing the start and then departing to Barca, and Keita needing to play out a final year at Leipzig.
In terms of Chances Created/90 though, we should have the following next season:-
Shaqiri = 2,27
Fekir = 2,14
Chamberlain = 2,03
Mane = 2,00
Salah = 1,91
Lallana (16/17) = 1,88
Firmino = 1,85
Keita = 1,79
And tactically, it's much easier to shut the supply if you have a creative hub in the team (see Hazard man marked by Herrera last season), than if you have 5 players on the pitch who are all capable of creating ~2 chances per game, which is very hard to shut that down. Probably only Man City can match or better that in terms of players who offer both penetration and creativity.
There is also Solanke (2,32 - albeit small sample size) who many hope can kick on this season after finally getting a goal at Brighton.