we could move milner into the lallana role and play moreno?
It is a possibility but it would suprise me. Klopp seems reluctant to play Moreno and with Lovren probably coming in, I'd be suprised if we'd see more chances to our back 4. If Henderson isn't ready to start, I expect Coutinho to come in the midfield and Origi out wide or up top.
However, I'd prefer a shift back to a 4231 with Can and Wijnaldum at the base, Coutinho and Manι on the wings, and Firmino just behind Origi. I think it would benefit our entire front four but is very unlikely I think.