The fullback has penned a letter - via the Liverpool Echo - to the city that made him one of its own.
Robertson, 32, joined Liverpool from Hull City in 2017 for £8 million, a fee that now reads as one of the most lopsided deals in the history of the transfer market. He spent three seasons as the undisputed first-choice left-back and made 41 international appearances for Scotland during his time on Merseyside, losing his starting position only this season to Milos Kerkez. He confirmed his departure after contract discussions ended without agreement.
He penned an open letter published in the Liverpool Echo ahead of the final game. A section of it follows.
"I'm a proud Glaswegian. I always will be. I love telling people where I'm from. It's part of who I am. But after nine years here, I've realised there's room in my heart for two cities."
He described the similarities between his home city and his adopted one.
"The humour, the people, the mentality — it all felt familiar straight away. At times it genuinely feels like Glasgow and Liverpool are only separated by two different accents. Both cities have that working-class spirit. Pride. Defiance. People who say what they think. No airs and graces."
On his family's bond with Merseyside: "Rachel and I arrived in 2017 as a young couple expecting our first child. Looking back now, we probably underestimated how daunting it was — moving to a new city, away from family, about to become parents for the first time. But Liverpool instantly made us feel comfortable. Over the nine years, two became five. Liverpool is where our little team was built. We've got three proper little Scottish Scousers."
On what the supporters meant to him: "The connection I've built with them is something I'll carry with me forever. We won together, we lost together, we laughed, celebrated, cried and mourned together. There was always a feeling that the supporters and the team were pulling in the same direction, fighting for each other."
He was unable to resist one last dig at Everton, delivered with characteristic lightness.
"Getting booed at the Hill Dickinson while playing for Scotland recently was honestly one of the highlights of my year."
He closed with the sentiment that has defined his relationship with the city: "Thank you for welcoming a skinny wee lad from Glasgow who kicks a bag of air around for a living and making him feel part of something much bigger than football."
Robertson also delivered a clear message on the club's direction ahead of next season.
"It's important that we get Champions League football. That's a must. Hopefully next season they can rebuild and the performance levels can lift again."
He leaves as one of the defining figures of Liverpool's most successful modern era.