Disclosure: my knowledge of the player is based solely on a 10 min YouTube clip. However, both this guy and Amad have unreal dribbling skills - very low centre of gravity and very Messi-esque in style.
They appear to have a really high ceiling and they look like they may not be that far off pushing our first teamers all the way - I noticed Facundo playing from the left in some clips. You have to credit the scouts for this one.
My 2 reservations (and forgive my talking about both players in one post) are -
1. They do look quite small
2. There's little evidence of end product from those clips. But I remember another skillful youngster full of tricks who joined us from Sporting,and we all know how that turned out!