In selecting a U20 US Men’s YNT roster, coach Mikey Varas should be spoilt for choice. Whether it be the talent flooding into the MLS ranks, or exciting college standouts, there’s certainly a wealth of options at his disposal.

But it’s not quite that easy. At the crux of the MLS season, some clubs have been reluctant to release their top youth talent. That leaves Varas with his hands tied. He’s deep in some positions, yet frighteningly shallow in others.

And as the team heads into the Concacaf Cup — with World Cup qualification on the line — there are a lot of moving parts to be settled. Here’s a breakdown of the roster, with a look at the stars, squad players, and breakouts to watch.