Champions 12 years ago in Canada, Argentina believe they have a generation of players that can once again challenge for the title after they finished as runners-up in the South American Under-20 Championship earlier this year.
Their star man is playmaker Gonzalo Maroni, who has been linked with both Inter and AC Milan, while Boca Juniors midfielder Agustin Almedra could also be on his way to Serie A, with Napoli interested.
SQUAD IN FULL
Goalkeepers: Manuel Roffo, Joaquin Blazquez, Jeronimo Porteau.
Arturo Reyes' side arrive in Poland as dark horses, particularly given they are, relatively speaking, more experienced than some of the other assembled squads.
Juan Camilo 'Cucho' Hernandez is coming off an impressive campaign for Huesa in La Liga, though there is no place for Manchester City winger Ian Poveda, who was reportedly being considered for selection despite having previously represented England at youth level.
SQUAD IN FULL
Goalkaapers: Juan David Lemus, Kevin Mier, Reinaldo Fontalvo
Defenders: Andres Balanta, Juan Sebastian Palma, Andres Felipe Reyes, Carlos Cuesta, Brayan Vera, Hayen Palacios, Anderson Arroyo
Midfielders: Gustavo Carvajal, Andres Amaya, Andres Perea, Jaime Alvarado
Forwards: Deiber Caicedo, Johan Carbonero, Carlos Teran, Luis Sandoval, Juan Camilo 'Cucho' Hernandez, Luis Sinisterra, Ivan Angulo
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Ecuador
COACH: Jorge Celico
STAR PLAYER: Leonardo Campana
Perhaps the finest generation of players to have been produced by Ecuador arrive in Poland as South American Under-20 champions having won the title earlier this year.
That competition's top goalscorer Leonardo Campana is set to be watched by a number of Europe's top clubs at this tournament, while Jorge Celico also possesses one of the best goalkeepers on show in Real Sociedad's Moises Ramirez.
SQUAD IN FULL
Goalkeepers: Moises Ramirez, Johan Lara, Pierre Bellolio
Defenders: Jackson Porozo, Gustavo Vallecilla, Richard Mina, John Espinoza, Luis Loor, Diego Palacios, Luis Castillo
Midfielders: Jordi Alcivar, Jefferson Arce, Jordan Rezabala, Luis Estupinan, Jose Cifuentes, Sergio Quintero
Forwards: Leonardo Campana, Stiven Plaza, Alexander Alvarado, Daniel Segura, Gonzalo Plata
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France
COACH: Bernard Diomede
STAR PLAYER: Moussa Diaby
Widely tipped to follow in the footsteps of the France senior side and lift the World Cup this summer, Bernard Diomede is spoiled for choice given the impressive depth of talent available to him in Poland.
Borussia Dortmund centre-back Dan-Axel Zagadou will likely be partnered by Arsenal target William Saliba in defence, in front of Fiorentina No.1 Alban Lafont, while up front PSG starlet Moussa Diaby and Lyon striker Amine Gouiri will be relied upon to provide the goals.
SQUAD IN FULL
Goalkeepers: Didier Desprez, Alban Lafont, Ilan Meslier
Defenders: Thomas Basila, Nicolas Cozza, Boubacar Kamara, Evan Ndicka, William Saliba, Sambou Sissoko, Dan-Axel Zagadou
