Real Madrid registered their players for the 2015/2016 edition of the UEFA Champions League. These players will be the ones officially on the roster, but any other U21 players within Real's system could eventually feature if needed.
Goalkeepers: Keylor Navas, Kiko Casilla and Rubén Yánez.
Defenders: Varane, Ramos, Pepe, Carvajal, Danilo, Arbeloa, Nacho, Marcelo and Abner.
Midfielders: Kroos, James, Modric, Kovacic, Casemiro, Isco, Bale, Lucas Vázquez, Cheryshev, Marcos Llorente and Odegaard.
Attackers: Cristiano, Benzema, Jesé and Borja Mayoral.
Abner, Marcos Llorente, Ødegaard and Borja Mayoral are Benítez's chosen ones for the European roster. These four players are definitely Madrid's most interesting prospects and while Abner hasn't played in a while because of a knee injury, the coaching staff and the board believe in his potential.
In other news, David De Gea was included in United's list for this Champions League as well after his transfer to Real Madrid turned out to be a fiasco at the last minute of the deadline.