Barca with Messi & Xavi, Man Utd with Giggs & Scholes - the best academy XIs in history

Barcelona's La Masia academy is probably the best known producer of talent in football, but it's not the only conveyor belt of brilliance. Major clubs around the world have a history of creating future stars. Here are the all-time best XIs of many of the world's biggest clubs, containing players developed for at least two years before turning professional.

Francesco Toldo; Mattia De Sciglio, Alessandro Costacurta, Franco Baresi, Paolo Maldini; Giovanni Stroppa, Demetrio Albertini, Alberigo Evani; Alessandro Matri, Marco Borriello, Pierre-Emerick Aubameyang

Edwin van der Sar; Michael Reiziger, Frank Rijkaard, Frank de Boer, Ruud Krol; Clarence Seedorf, Dennis Bergkamp, Edgar Davids; Johan Cruyff, Marco van Basten, Piet Keizer.

Thabet El-Batal, Rabea Yassin, Hassan Hamdy, Hany Ramzy, Hossam Ashour, Mokhtar Mokhtar, Taher Abouzeid, Mostafa Abdou, Mahmoud Hassan Trezeguet, Emad Moteab, Hossam Hassan

Mohamed Al-Deayea,  Ahmed Dokhi, Saleh Nu'eimeh,  Hussein El Habashy, Fahad Al-Musaibeah, Khamis Al-Owairan, Mohammad Al-Shalhoub, Yousuf Al-Thunayan, Nawaf Al-Temyat, Omar Abdulrahman, Sami Al-Jaber

Wojcech Szczesny; Hector Bellerin, Martin Keown, Tony Adams, Ashley Cole; Paul Merson, Jack Wilshere, Cesc Fabregas, Liam Brady; Charlie George, Andy Cole

Ivan Pelizzoli; Andrea Conti, Alessandro Bastoni, Mattia Caldara, Gianpolo Bellini; Giacomo Bonaventura, Riccardo Montolivo, Daniele Baselli, Roberto Donadoni; Giampaolo Pazzini, Manolo Gabbiadini

David De Gea; Juan Carlos Aguilera, Juanma Lopez, Roberto Solozabal, Antonio Lopez; Saul Niguez, Gabi, Koke; Adrian Escudero, Fernando Torres, Enrique Collar

Victor Valdes; Albert Ferrer, Carles Puyol, Gerard Pique, Jordi Alba; Xavi, Pep Guardiola, Andres Iniesta; Cesc Fabregas, Lionel Messi, Luis Garcia.

Sepp Maier; Philipp Lahm, Georg Schwarzenbeck, Mats Hummels, Frank Beckenbauer, Hans Pflügler; Toni Kroos, Bastian Schweinsteiger, Dietmar Hamann; Thomas Müller, Nicola Sansone

Willy Caballero; Nicolas Burdisso, Fabricio Coloccini, Oscar Ruggeri, Roberto Mouzo; Ever Banega, Antonio Rattin, Fernando Gago; Angel Clemente Rojas; Diego Latorre, Nicolas Gaitan

Eike Immel; Kevin Großkreutz, Dieter Kurrat, Antonio Rüdiger, Marcel Schmelzer; Thorsten Fink; Michael Zorc, Nuri Sahin; Mario Götze; Marco Reus, Lars Ricken

Peter Bonetti; Andreas Christensen, John Terry, Ron Harris, Nathan Ake; Ruben Loftus-Cheek, Ray Wilkins, Declan Rice; Callum Hudson-Odoi, Jimmy Greaves, Peter Osgood

Zlatko Skoric; Vedran Corluka, Velimir Zajec, Dario Simic; Zvonimir Boban, Luka Modric, Robert Prosinecki, Marko Mlinaric; Zlatko Kranjcar, Drazen Jerkovic, Eduardo da Silva

Julio Cesar; Leandro, Carlos Mozer, Antonio Rondinelli, Leo Junior; Zico, Andrade, Adilio, Savio; Bebeto, Adriano

Turgay Seren; Bulent Eken, Coskun Ozari, Bulent Korkmaz; Okan Buruk, Tugay Kerimoglu, Suat Kaya, Emre Belozoglu; Isfendiyar Aciksoz, Gunduz Kilic, Arda Turan

Thibaut Courtois; Timothy Castagne, Kalidou Koulibaly, Christian Kabasele; Yannick Carrasco, Steven Defour, Wilfred Ndidi, Leon Bailey; Kevin de Bruyne; Divock Origi, Christian Benteke

Walter Zenga; Giuseppe Bergomi, Riccardo Ferri, Leonardo Bonucci, Giacinto Facchetti; Mario Corso, Gabriele Oriali, Sandro Mazzola; Goran Pandev, Marco Delvecchio, Mario Balotelli

Antonio Mirante; Mattia Cassani, Daniele Gastaldello, Sergio Brio, Domenico Criscito; Giuseppe Furino, Claudio Marchisio; Domenico Marocchino, Gianpiero Bonaperti, Sebastian Giovinco; Roberto Bettega

Tony Warner; Chris Lawler, Phil Thompson, Tommy Smith, Jamie Carragher; Steve McManaman ,Steven Gerrard, Ian Callaghan, Billy Liddell; Michael Owen, Robbie Fowler

Anthony Lopes; Vincent Clerc, Bruno N'Gotty, Samuel Umtiti, Jérémy Bréchet; Corentin Tolisso, Houssem Aouar; Hatem Ben Arfa, Nabil Fekir, Anthony Martial; Karim Benzema

Kasper Schmeichel; Kieran Trippier, Micah Richards, Ben Mee, Angelino; Shaun Wright-Phillips, Denis Suarez, Joey Barton, Phil Foden, Jadon Sancho; Daniel Sturridge 

Jimmy Rimmer; Gary Neville, John O'Shea, Bill Foulkes, Roger Byrne; George Best, Duncan Edwards, Paul Scholes, Ryan Giggs; Mark Hughes, Bobby Charlton

Stéphane Ruffier; Manuel Amoros, Lilian Thuram, Sébastien Squilacci, Layvin Kurzawa; Emmanuel Petit, Nampalys Mendy; Yannick Carrasco, Kylian Mbappé, Thierry Henry; David Trézéguet  

Alphonse Areola; Antoine Conte, Presnel Kimpembe, Mamadou Sakho, Boukary Drame; Jerome Leroy, Luis Fernandez, Adrien Rabiot, Francis Llacer; Moussa Dembele, Nicolas Anelka

Jeroen Zoet; Ernest Faber, Rob Wielaert, Wilfred Bouma, Patrick van Aanholt; Ibrahim Afellay, Riechedly Bazoer, Ismail Aissati; Zakaria Labyad, Klaas Jan Huntelaar, Memphis Depay

Iker Casillas; Dani Carvajal, Goyo Benito, Manolo Sanchis, Nacho; Michel, Juan Mata, Martin Vazquez; Raul, Alvaro Morata, Emilio Butragueno.

Ubaldo Fillol; Martin Demichelis, Javier Mascherano, Daniel Passarella; Pablo Aimar, Matias Almeyda, Alfredo Di Stefano, Ariel Ortega; Hernan Crespo, Gonzalo Higuain, Radamel Falcao

Angelo Peruzzi; Francesco Rocca, Agostino Di Bartolomei, Ubaldo Righetti; Daniele De Rossi; Bruno Conti, Alessandro Florenzi, Alberto Aquilani, Angelo Di Livio; Francesco Totti, Stefano Okaka

Rafael Cabral; Lima, Alex, Joel Camargo, Emerson Palmieri; Clodoaldo, Cesar Sampaio; Robinho, Pele, Pepe, Neymar

Manuel Neuer; Carlos Zambrano, Benedikt Howedes, Joel Matip, Sead Kolasinac; Olaf Thon; Leroy Sane, Mesut Ozil, Max Meyer, Julian Draxler; Mike Hanke.

Beto; Eric Dier, Rui Fonte, Daniel Carrico; Simao Sabrosa, Joao Moutinho, Miguel Veloso, Paulo Futre, Luis Figo, Cristiano Ronaldo, Nani

Ian Walker; Steve Carr, Sol Campbell, Ledley King, Charlie Daniels, David Beckham, Harry Winks, Nick Barmby, Andros Townsend, Harry Kane, Peter Crouch.

Mervyn Day; Michael Carrick, Bobby Moore, Rio Ferdinand; Glen Johnson, Trevor Booking, Paul Ince, Frank Lampard, Joe Cole; Martin Peters, Geoff Hurst