Ahead of tonight's Champions League clash against Newcastle, Cubarsi discussed the youngsters now making their mark with Barca.
He said: "We're very young, and we're eager to give our all for this club, just like we've done for so many years in the youth ranks. When you're young, you start gaining that experience to play in big games. You can give your best regardless of age.
"In a Champions League match, you find the best players in the world. It's not a problem to focus on the striker; I focus on myself."
On Gerard Martin, Xavi Espart and Alvaro Cortes, Cubarsi also said: "Gerard is having a spectacular season. He feels comfortable at centre back, we help each other out. But all the center backs on the team can play and perform at their best.
"I tell them to stay calm, that we're here to play football and not to pay attention to everything they hear around them. Espart has had his chance and he's given 100%. Cortés will do the same when he comes on."