I'm not so shook up over Markovic, although I do agree that he looked better than Ibe has this year. But the kid needs playing time and not off the bench. He hasn't even made the traveling squad this year. Keep in mind we could probably also play Origi or Ings at that right wing / right channel forward position and Sturridge also likes to ghost in from the wings as well. So I'm not too worried about depth there. When Sturridge comes back Liverpool are going with a 4 2 1 3 with Hendo/Milner and then Coutinho, and then Firmino/Benteke/Sturridge with Ings/Lallana/Origi all waiting for their time. Markovic is competing with the front three and not the middle three. The middle three depth will be Rossiter, Can, Lucas. If Coutinho is out Lallana or Firmino will deputize with someone from the bench playing up front. Again I don't see Markovic getting time here.
Having typed all that out, I love the depth on this team. Great job by Rogers in putting the team together... they are solid. My big concern is that they rely way too much in Coutinho magic to drive their offense for my comfort. He's good but he hasn't gotten to that Iniesta/Pirlo/Xavi class of players whom you can build your entire offense around yet. Granted not many players have but Liverpool seems to be counting on him to be that type of guy.