Anyone wanting a glimpse of the challenges facing Liverpool at present and in the future need only look at their squad for the Champions League group stage.
The absence of both Naby Keita and Alex Oxlade-Chamberlain instantly garnered attention when the list emerged on Sunday.
But that Liverpool were unable to name a full 25-man senior squad also pointed at a long-term issue of which Jurgen Klopp and his recruitment team will be all too aware.