I have nothing to base it on and could be completely wrong but i always felt like Klopp was going to use Fekir to rotate with Firm as a false 9. He seems to have the technical ability to do it.Ive always though Klopp wanted to play with 1 sitting midfielder and 2 runners. Fabinho will become the sitting midfielder, and Keita is clearly one of the runners. If he were fit I suspect Ox would take the other spot giving us a good balance of direct pace and tenacious ball winning. As it stands hes put for.most if not all of the season so its between Milner and Wjinaldum for the 2nd run spot as Henderson doesnt seem to have the legs for it now.
I dont really know how Fekir would have fit if hed joined as Klopp never seems to play a no10, maybe wide left or just behind a front 2.
Also it seemed like the old hendo to me during the world cup. He did a ridiculous amount of running.