For this WC forget it, at the current under 21's the only one who might turn a good player is Ruben Dias, Ferro forget it, then Paulo Oliveira, Ruben Semedo, Vezo, Ié, simply none of them is good enough compared with other top teams.
Paulo Oliveira, forumscp darling, has been crap for Eibar. Him and Rúben Semedo are rubbish and are in the top 10 list of worst purchases in la liga this year. Vezo isn't a world beater but had decent games for Valência and Granada. I agree that Rúben Dias does look good but he hasn't played enough to be considered as a potencial choice. He wasn't spectacular yesterday for the U21 against the swiss. I'm always skeptical with the overrating of Benfica players. I think that we have a real problem in the cb position. It has surpassed the striker issue in my mind.