JD Davison
Jaden Springer
Jordan Walsh
Xavier Tillman
Neemias Queta
off the bench: Drew Peterson
Definitely better than it was before the deadline. Could win the G-league chip.
I am not counting Euro-stash players.
For a quick historical comparison, here's some names from the 2006-7 under-25 Team: Tony Allen, Ryan Gomes, Gerald Green, Al Jefferson, Kendrick Perkins, Leon Powe, Rajon Rondo, Sebastian Telfair, Delonte West.
EDIT: To be accurate, I changed the thread title to "25-and-under"