Sakho has made a big mistake with his social media outburst and he'll be gone in the next window unless he makes some huge changes and Klopp has a change of heart. He's a good defender and a potential leader but is prone to lapses in professionalism.
With Matip coming along nicely, Lovren thriving under Klopp, Klavan a willing replacement when needed and Lucas able to do a great job there, Sakho should have shut-up and got on with it but he's now 5th choice and possbily even 6th choice once Gomez is fit.