Youngest average age for a football (soccer) Champions League team

The youngest average age for a Champions League team is 20.90 years and was achieved by Arsenal FC (England) in their Champions League first round match versus Olympiacos Piraeus (Greece) at Georgios Karaiskakis Stadium, Athens, Greece, on 9 December 2009. Arsenal lost the game 1-0 to the Greek Champions but had already qualified for the second phase of the competition hence manager Arsene Wenger's decision to field so many young players. The team in full and their age on the day of the game was: Lukas Fabianski 24, Kerrea Gilbert 22, Kyle Bartley 18, Mikael Sivestre 32, Thomas Cruise 18, Aaron Ramsey 18, Alex Song 22, Fran Merida 19, Jack Wilshere 17, Theo Walcott 20, Carlos Vela 20. The previous youngest team was Ajax who fielded a team exactly 6 years before Arsenal with an average age of 21.54 years old. Their team was Lobont 25, Grygera 23, Heitinga 20, Escude 24, Maxwell 22, De Jong 19, Sneijder 19, Van de Vaart 20, Sonck 25, Ibrahimovic 22, Mitea 18.