The England international is expected to start in Paris, which at 23 years and 233 days old would see him become the second-youngest player in the history of the competition to play in three finals, behind only Alessandro Del Piero, who did so at 23 years and 192 days old.
Alexander-Arnold played in the 3-1 final defeat to Real Madrid in 2018 before featuring again on the grandest stage a year later, helping Liverpool beat Tottenham Hotspur 2-1 to lift the Champions League trophy.
Having started in both of those contests, the 23-year-old could also become the youngest player to start three Champions League finals if he appears from the off on Saturday.
A starting berth in Paris would see him surpass Thomas Muller, who currently holds the record at 23 years and 254 days.
The right-back, who has featured in eight Champions League games this season, will be hoping to help Liverpool win their seventh European Cup. body check tags ::