One of the hardest to predict this for sure. I'll go with the following:
Kelleher - Needs the game time and no harm in resting Alisson
Neco - Chance to rest Trent and for Neco to build upon his impressive international games
Konate - Needs the game time
Matip - I'd see one of Matip or Virgil playing and since Matip had a rest over internationals I'll go with him.
Tsimikas - Think him and Robertson will play a half each with Robbo coming back from injury
Ox - In decent form but game time might dry up a bit with other midfielders back from injury
Morton - Chance for a champions league debut and to rest Fab
Thiago - He did the press conference
Salah - Between him or Mane, Mane on a booking so I'll go with Salah
Origi - If he's feeling better
Minamino - Needs minutes
Kelleher
Neco - Konate - Matip - Tsimikas
Ox - Morton - Thiago
Salah - Origi - Minamino
Phillips might also be in with a shout to replace Matip in the second half I reckon