Benfica's academy has been churning out top-level talent for decades, with their recent graduates including the likes of Bernardo Silva, Joao Felix, Ruben Dias, Renato Sanches and Joao Cancelo.
It is a conveyor belt of talent that is showing few signs of slowing down either, given the Portuguese side won the prestigious UEFA Youth League last season, beating Red Bull Salzburg 6-0 in the final.
As with all great academy sides, the challenge is then knowing the right time to promote each player to the senior side – a challenge that former manager Jorge Jesus was criticised for not embracing during his time in charge.
This season, though, things have changed, with Roger Schmidt now in charge and willing to take a chance on youth when the opportunity arises.
Such an opportunity came about in August, when a defensive injury crisis allowed 18-year-old Antonio Silva to step in and make his senior debut.
Less than two months later, Silva is an automatic pick for Schmidt's side, has shackled the world's best in the Champions League and is being linked to some of the biggest clubs in world football.
So, what makes him so special? Let NXGN explain...