Leicester City announced on Wednesday the club has signed Raul Uche Rubio from Rayo Vallecano on a four-year deal for an undisclosed fee.
The transfer will be officially completed when the summer window opens on July 1.
Uche will join the club's academy and initially participate with the Leicester City development squad for the 2016-17 campaign.
The 18-year-old is the second Spanish addition to the Foxes' roster, with Luis Hernandez also set to join the team out of Sporting Gijon for next season.
Uche comes to the Premier League-winning outfit highly touted, with Leicester explaining he had a number of interested parties vying for his signature.