Since 2013/14 players across the continent have been competing with their clubs in the UEFA Youth League and many are appearing at UEFA EURO 2024.
A full review of a campaign that ended with Olympiacos crowned as champions for the first time.
Chelsea's Andreas Christensen and Mason Mount did the Youth League and Champions League double in 2021 while two others have won both junior and senior club honours.
The Greek side's use of width, the high press and their well-drilled defence all come under the microscope.
Olympiacos won the tenth edition, defeating AC Milan 3-0 in Nyon to make history for Greece.
Three goals in a seven-minute second-half burst gave Olympiacos the title and Greece their first UEFA club trophy.
Olympiacos will play AC Milan on Monday in Nyon for the title.
Which players have the most appearances and goals? Which club have dominated? Find out here.
The 2024 finals were played at Colovray Sports Centre in Nyon, opposite UEFA's Swiss headquarters, on 19 and 22 April.
When is it? How can you watch it? What are the line-ups? All you need to know about the UEFA Youth League final between Olympiacos and AC Milan.
Ahead of the UEFA Youth League final, the UEFA analysis unit dissected goals in the competition with the help of Ole Gunnar Solskjær.
AC Milan and Olympiacos will face off in Monday's final in Nyon after both came through last-four shoot-outs.
Porto meet Milan in the last four later for a final spot.
See where to watch selected matches in the UEFA Youth League around the world.
The finals return to Nyon for the tenth edition from Friday with Olympiacos playing Nantes and Porto meeting Milan in the last four.
Information for the finals in Nyon.
Refreshments at the finals in Nyon.
The finals are at Colovray Sports Centre on 19 and 22 April.
Details for the UEFA Youth League finals at Colovray Sports Centre in Nyon, Switzerland, on Friday 19 and Monday 22 April.
Olympiacos and Nantes set up a semi-final and AC Milan are also through with Mainz now taking on Porto.
AC Milan will take on Porto and Olympiacos face Nantes in the semis after winning their ties.
Olympiacos and Nantes went through on Tuesday with Milan-Madrid and Mainz-Porto on Wednesday.
Olympiacos won 3-1 at Bayern with Nantes meeting Copenhagen for the first to face them in the semis, and Milan-Madrid and Mainz-Porto on Wednesday.
Bayern face Olympiacos and Nantes meet Copenhagen on Tuesday with Milan-Madrid and Mainz-Porto the next day.