If Wijnaldum is unfit, Sturridge will probably come into CF, with Firmino left and Mane right. Coutinho and Henderson up top in midfield, Can in the back. Lallana may be available on the bench I reckon. Or the other option is Lucas, but he hasn't had any game time really. But Klopp definitely trusts his experience in games like this.
If Clyne is not going to be fit, I think Milner will slot into RB, with Moreno coming back in at LB.