But he is excellent at the slightly-below-the-very-top level. You have to concede that.
Thankfully with City around in the domestic league and potentially Chelsea, Arsenal, Tottenham and United, there are teams with far better quality so they won't win anything in England. Plus there are decent European sides that should hold up to them so again, no joy in the trophies there.
To get the team they have winning stuff, Klopp would have to be a very top level manager. For him to win the league is akin to Ferguson getting a tune out of his last league winning squad - you really would have to be a master of your trade to get the title with what is there. It's actually possible for them, but the tactics and tiredness levels and lack of depth in the squad will do for them.
I don't know who their replacement for Klopp will be, but I think that it's a fair thing to speculate on now. He's yesterday's man. Geggenpress is nothing more than a tactical evolutionary dead end.