The United States Under-20 Men’s National Team is building towards the upcoming FIFA U-20 World Cup in May, recently calling up a 20-player squad that is in Argentina for a training camp. However, as part of the excursion occurs outside of the international window, there are a few absences from the group. One notable omission is Caleb Wiley of Atlanta United, who is marked as one of Major League Soccer’s top young prospects. The 18-year-old fullback has already earned Player of the Matchday honors and stood out for his attacking abilities in his secondary role as a winger.