Roberto recognises the hype around his young teammate.
He told Sport: "Maybe he's the one who they speak the most about, yes.
"When you play, you see different things, more details. Maybe his example to follow is (Carles) Aleñá, a player who is already in the first team.
"It is important that players of this type go up and if they can stay with us, much better. It is important that there are more players from the academy, it makes it all the better."