I think Milner is an absolute cert to play today. I was surprised he didn't play on Thursday due to his leadership and experience.
Think the Thursday to Sunday nature of the last 2 games means we'll rotate a bit and a few players who started on the bench on Thursday will start. Neco Williams, Milner, one of Phillips or Rhys Williams, Jones, Minamino, Salah and Firmino gives you 8 starters when you include a GK.
Think the remaining 3 is from Robertson or Tsimikas, Fabinho or Matip and then either a 3rd midfielder (Thiago, AOC or Gini) or a 4th forward (Origi, Mane or Shaqiri).
If I had to guess I'd go with the following:
Alisson
Williams
R.Williams
Fabinho
Robertson
Milner
Jones
Minamino
Firmino
Origi or AOC
Salah