Vinicius and Rodrygo were absolute certs barring injury. As good as Mastantuono looks, I've read from people that watch him regularly that there are a lot of fundamental things he needs to work on so for the price they are looking to sell him, that presents a big risk. It's been a very long time since the 'next Maradonna/Messi' coming from Argentina (Thiago Almada, Echeverri, Presstianni) lived up to their expectations past youth level so its fair to be cautious.