Palmeiras striker Endrick attended Real Madrid's win against Villarreal on Sunday.
The teen will formally join Real Madrid at the end of the season.
Endrick told Realmadrid TV before kickoff: I was at Valdebebas and it was great for me to spend some time with my future teammates.
"I think the game will be fantastic and I hope Real Madrid win it.
"Being here is something I've dreamed of since I was little and thank God I'm experiencing it with my family and those who support me. It's going to be an incredible story."