If I may say something about training players over 25 and up. You can still get pops after age 25. Case in point Putong a pg in the NT got around 4 to 5 pops last season at age 26. While pops will be slow and few every season. Teams who have no players being trained while having NT players can still train their players up to around 28 to 29 yo. The problem is how to convince managers to train their players more after 25 yo especially the bigs which have really big salaries.
Good luck and congratulations to The Manager. You'll need it :)
http://www.buzzerbeater.com/player/21313538/overview.aspx you may want to consider this player. He was in the NT on my first season but dropped him due to bad game shape but he was sold to a new manager so he might be better taken care of right now.