As a representation of all that popular manager Jurgen Klopp stands for, it was definitive: a relentless, hungry side all pulling in one direction - the City goal.
"They might look to make it a physical game to stop those breaks, but they won't have come up against an attack like this, having benefited from a relatively favourable group".
"I think he's been one of the most important Liverpool signings and probably the best Liverpool signing in the last ten to 15 years".
Though Philippe Coutinho has gone to Barcelona, with Senegal forward Sadio Mane also on board, Liverpool's front three is the envy of many teams. It makes Anfield a fortress, a seething cauldron from which few visiting sides emerge with fond memories.
The Spanish giants have recently been linked with a move for Gremio youngster Arthur, which could be their reason for wanting Coutinho to secure a Portuguese passport, which would not result in a switch in allegiance from the Brazil national team to Portugal.
Liverpool have since righted the ship and got back on track, but there is the sense that, for all that the progress made under Klopp is evident in the uniqueness and ferocity of the playing style, the German may be running out of learning curves. That's how it is.
"And everything is as they say".
He rattled the cage by continuing to push for a move to Barcelona in January, leaving Jurgen Klopp with little choice but to relent. This is where Keita comes in; the Guinea international is not so much a Coutinho replacement as he is a vital piece of the jigsaw, and possibly the final one.
While Coutinho was vital for his flashes of inspiration, which could in part explain away his occasional positional flights of fancy, his inclusion in a midfield three, especially in a Liverpool side with no specialist defensive midfielder was often problematic. "Not conceding goals, we are always closer to winning the game, no doubt". The Emirates Stadium has, for example, played host to several of their friendlies.
He will be hoping to help Barca maintain their high standards from now until the end of the season to deliver the league title and then it'll be on to the World Cup in Russia, but after that, things could be about to change regarding the player's citizenship.
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With his publicly stated desire to emulate legend Yaya Toure, coming to the Premier League is only the first step.