Last season when Liverpool beat Manchester City at Anfield it appeared to set them on their way to the title.
They would later fall short, but had they won, Coutinho's winner in the 3-2 win would have been seen as a pivotal moment.
This weekend when the two teams face off, Liverpool have less lofty ambitions, but are every bit as determined to keep in touch with the battle for fourth place. City meanwhile have a chance to put pressure on Chelsea, with the league leaders not in Premier League action this weekend.
SkySports pundit Paul Merson foresees Manuel Pellegrini's team falling short again, predicting Liverpool to register a narrow win.
He said: "I am just going for Liverpool here. They have really picked up of late, while Brendan Rodgers has rested a couple of players for the trip to Besiktas in Philippe Coutinho and Jordan Henderson, and for me this game on Sunday is bigger than the Besiktas match.
"Getting beaten by Barcelona on Tuesday will have really knocked the stuffing out of City. And I think that Liverpool are at home and are on a right roll at the moment, so I see them winning this game 2-1."
Despite their penalty shootout Europa League exit, Liverpool are the form team. They are unbeaten in the league in 2015, and have won 16 of a possible 18 points from their last six games.
City have won their last two games in a row, but prior to that had gone four games without victory. They currently sit just five points behind leaders Chelsea and can temporarily reduce that lead to two with an away win.