In the CDM role, when fit, Emre Can is normally the best option. When he isn’t fit, I believe Jordan Henderson is the next best choice. Many want Marko Grujic to play here over Henderson, based purely on his preseason, and I feel if Marko was the best option Klopp would be playing him.
Then for the two central midfielders, I believe Adam Lallana is a definite pick. His movement is highly influential, and his pressing compliments Liverpool’s tactical style. He’s good on the attack despite lacking an end product, and he does a job getting back too.
Then alongside Adam Lallana, Georginio Wijnaldum has been played. I believe Wijnaldum offers a decent attacking threat, but that he isn’t influential enough at the moment.
In all honesty, I believe Lucas Leiva would be the better option in CDM, with Henderson and Lallana forming a midfield partnership. Lucas adds that defensive edge and covers the back four more, and Henderson and Lallana can press and contribute on both attack and defence.
Henderson is more comfortable in the CM role, and he is likely to have more presence than Wijnaldum, who has been invisible bar the odd moments.
Hopefully Emre Can returns to fitness as soon as possible, rather than later.