Manchester City will host Borussia Dortmund on Tuesday, when Giovanni Reyna will have the opportunity to play against Sergio Aguero, one of his childhood idols.
The Argentine forward was the player who, without knowing it back in 2012, gave Reyna's brother Jack one of the best moments of his life before he died of cancer.
It was in Manchester City's duel against Queens Park Rangers, when Aguero netted a late decider to clinch the Premier League trophy for the Sky Blues in the last game of the season.
"We went crazy in the living room," Reyna recalled for The Players' Tribute back in December.
"We were jumping around, shouting and celebrating and hugging each other. A first league title in 44 years! Won in the most incredible manner. We looked at each other in disbelief.
"Suddenly we heard someone gasping for air. It was Jack. He was rolling around on the floor, which came out of nowhere because he barely had any energy left in his body. We got very concerned. For 20 seconds it looked like he couldn't breathe.
"Then, slowly, Jack broke into a smile and began to laugh. We realised that he was celebrating the goal. He was just as happy as we were.
"I'll never forget that moment. It was so amazing, so funny, so crazy.
"A bit more than nine weeks later, on July 19, Jack passed away."