In 2013, then-Liverpool manager Brendan Rodgers decided to let Peter Gulacsi leave the club on a free transfer.
This evening, Rodgers and Gulacsi meet again and the Hungarian goalkeeper will have a point to prove.
Under Rodgers at Liverpool, Gulacsi never made a single appearance. Then, Rodgers allowed him to join Red Bull Salzburg instead.
Fast forward five years and Gulacsi is an established member of the Red Bull Leipzig squad, who take on Celtic tonight.
The two teams meet in the Europa League and a good game is expected.
But there is an added incentive for Gulacsi, who will be aiming to show Rodgers exactly how good a goalkeeper he is.
At the time, Pepe Reina was Liverpool’s undisputed number one. Gulacsi had little chance of beating the Spaniard to a starting spot.
But since leaving Anfield, the 28-year-old has turned into a fine goalkeeper and he regularly plays for RB Leipzig.
The Hungary international has played nearly 100 games for the Bundesliga side in all competitions, including 12 this season.
He is their number one choice between the sticks, although Yvon Mvogo will be hoping to play instead.
If Gulacsi does get the nod ahead of Mvogo, he will be keen to show Rodgers what he missed out on by letting the towering stopper leave back in 2013.