Dani Ceballos, Borja Mayoral, Jesús Vallejo and Marco Asensio were Spain's most important players in the U19 Eurocup. Real Madrid signed Asensio a few months ago, Mayoral is a product of Real's academy, Vallejo is set to sign his contract and spend next season with Zaragoza on loan and Dani Ceballos is the team's newest target, according to Marca.
Ceballos is a creative midfielder who plays for Betis, but he hasn't signed a contract extension with the Andalusian club yet and Real Madrid want to take advantage from that. The player would stay with Betis this season as well, given that he would not have room in Real's roster, but Los Blancos would have signed the three most attractive prospects in Spanish football.
Real Madrid should definitely complete this move and see if these three players have what it takes to become relevant players in the future. They definitely have the potential to achieve that, so it will all be a matter of fulfilling that potential.