I will throw my hat into the ring for the U21 job here.
I've played since about S21/22, my last team the Shrewsbury Honeybadgers went out with a bang after amassing over 1700 players and going bankrupt. That team also found a way into the USA Cup Semifinals at one point.
I've worked with the USA U21 for a number of seasons as a scout for each age level and position, and have trained multiple players that played on U21 teams for USA, Spain, and Israel.
I once had a team with 1757 players and was $25,835,360 in debt. This is not that team. Join the Discord group open to anyone, but especially for USA managers to improve your club or get involved with the U21 and NT programs
(https://discord.gg/cKpNkt2).