Alisson has revealed how last season's Champions League trip to Anfield lit the fuse for what has become a world-record transfer to Liverpool.
The 25-year-old goalkeeper penned a long-term contract with the Premier League side on Thursday after Roma agreed to sell him for an initial £56million.
That fee confirmed his status as the most expensive keeper of all-time and could yet rise a further £9m depending on performance-related clauses.
Jurgen Klopp described the Brazil international as "one of the world's best" despite seeing his side put seven goals past him over the two legs of last season's Champions League semi-final.
Though a 5-2 defeat at Anfield effectively ended Roma's hopes of making it to Kiev, Alisson described his memories of the April clash on Merseyside as forming part of his decision to sign for Klopp's men.
"Yes, in part it did influence the decision," he told Liverpool's official website.
"When you make an important decision like this it's not just a decision to change clubs, it practically changes your entire life, my family's life, my wife, my daughter.
"That game definitely did have an influence but I also watched other games. I've seen other games where I could see the way Klopp had the team playing.
"That has made me really excited to be part of this group."
Alisson, who had a previous spell with Internacional in his homeland, started each of Brazil's five matches at the World Cup in Russia.
|MLS Review: Rooney stunner seals DC win, Sounders clinch play-off spot|
|Pochettino ´proud´ of Dier for Ramos tackle|
|Wallabies name three uncapped players for All Blacks clash|
|Lakers coach Walton will monitor LeBron´s minutes, plans to use deep rotation|
|Lloris: United´s Pogba unfairly judged because of transfer fee|
|´Phenomenon´ Mbappe deserves Ballon d´Or, says Buffon|
|Dodgers on cusp of World Series after beating Brewers|
|Mata braced for ´difficult month´ at Man United|
|WATCH: Rooney scores wonderful free-kick for DC United|
|Kaino handed five-week ban for striking Roberts|
|Bears star Khalil Mack ´day-to-day´ with ankle injury|
|Anthony has ´a clearer understanding´ of his role with Rockets|
|Brewers remove Miley after one batter against Dodgers|
|Rams rule out Kupp for 49ers game|
|Giants owner Mara to talk with Beckham Jr|
|Bamberg battle back to claim Champions League win|
|MLB investigated alleged Astros sign stealing, found no wrongdoing|
|Timberwolves star Wiggins to donate $22 for every point this NBA season|
|Red Sox´s Sale won´t start game five of ALCS|
|Tsitsipas and Shapovalov advance at Stockholm Open|
|Witsel to Dortmund is signing of the season - Martinez|
|Pique confident Nadal will play in 2019 Davis Cup|
|Seeds suffer in Moscow and Luxembourg|
|Johnstone grabs hat-trick as England ease past France|
|Pogba and Mourinho disagreement over Instagram video, confirms Pereira|
|Nuggets coach Malone signs contract extension|
|Mayweather accepts Khabib´s challenge: ´We´re fighting´|
|Slovenia sack Kavcic as head coach|
|Morgan and Rashid star as England win rain-reduced ODI in Sri Lanka|
|Romagnoli aims to make Gattuso proud in Milan derby|
|Naldo signs Schalke extension|
|Bills to start quarterback Anderson against Colts with Allen out|
|O´Sullivan makes 147 at ´hellhole´|
|Barcelona know when captain Messi is angry – Abidal|
|Bertens loss hands Pliskova last WTA Finals berth|
|Liverpool star Mane undergoes hand surgery|
|F1 Raceweek: Happy hunting ground for title-chasing Hamilton - US GP in numbers|
|Canelo signs record-breaking DAZN deal|
|England hit by another Vunipola injury absence|
|Gruden: Oakland Raiders ´aren´t tanking´|
|Chiesa focused and happy at Fiorentina|
|We´ll see what´s possible - Henry not limiting Monaco´s ambitions|
|Wembley sale off after Khan offer withdrawn|
|Football needs people like Arsene - Pires keen for Wenger return|
|Abbas five-for torments woeful Australia as Pakistan take control|
|Henry: Wenger and Guardiola inspirations for my coaching career|
|Pires backs Henry and Vieira for Ligue 1 success|
|Bolt rejects Valletta offer|
|Wenger ready for January return to management – but where?|
|NBA 2018-19: The LeBron James effect on teams he has joined|
|Svitolina qualifies for WTA Finals after Pliskova loses|
|Genoa will sell ´superstar´ Piatek, admits president|
|Moutinho targets European qualification with Wolves|
|Embiid: 76ers-Celtics isn´t a rivalry, they always kick our a**|
|Vinicius ´calm´ as he waits for Real Madrid chance|
|Nothing else to say - Ramos posts clip of supposed Sterling stamp|
|Chiellini joins Mind the Gap campaign to help players prepare for retirement|
|Injured Kusal Perera replaced by Kusal Mendis in Sri Lanka squad|
|Big names return for Scotland´s November Tests|
|Essien tells Loftus-Cheek to stay and fight for Chelsea chance|
|Nainggolan relishing challenge of first Milan derby|
|Curry: Slap me if I tire of championship celebrations|
|Sevilla don´t fear Messi or Barca – Kjaer|
|Low: Dropped Muller is still very important for Germany|
|Hayward put ´dark memories´ behind him with Celtics return|
|I hope I´m in Klopp´s good books! - Koeman jokes after resting Wijnaldum|
|Rested Fellaini should be fit for Manchester United, says Martinez|
|France´s mentality must be right - Lloris|
|Bellinger seals dramatic win as Dodgers level up NLCS|
|Curry, Durant lead Warriors past Thunder|