I'd risk THB at the back and put Fern in the middle, because that is where he is devastating. Mendy in defense with Walker and Stones. Foden, Fern, KDB in the middle, Sterling, Mahrez and Sergio or Jesus up front.
But that's just me :)
Dipper's are not strong at the back and i think Foden, KDB (with the option of Cancello, or with either Bernardo or David) overlapping with Sterling and Mahrez could be devastating for them....
We just have to trust in Pep, as we do, and see where it takes us.
i really don't think Diverpool are as strong as they were last season, and that even with a reduced team we can beat them anywhere. But to combat Mane and Salah, i really do think we need a four man back-line (5 with Eddy) as Salah tends to come in wide and Mane will be silenced if he has two to contend with. I think the only times they will score will be from set pieces, so we have to be overly mindfull not to be giving them away.