Real Madrid academy product, César Palacios, has torn his ACL during their US pre-season tour.
Palacios will now return to Spain for further evaluation, according to ESPN.
The 19-year-old picked up the injury five minutes into his first-team debut in the 1-0 defeat to AC Milan.
Álvaro Rodríguez was also injured during the game, suffering an ankle sprain.
Madrid’s medical staff will make a decision on whether to send him back to Spain along with Palacios.
Real Madrid play LaLiga rivals Barcelona in the second match of their preseason tour Saturday in New Jersey.
Preseason: Real Madrid suffer injury blow ahead of Barcelona clash
