If they are U21 NT prospects so it's your scout's role to find people that will keep looking after your best young players. Simple.
India is not Poland we do not have infinite resources. What we do attempt is to save about 50 or more prospects a season from teams going bot, basically any player $4k or more with star potential can become an U21 NT player if trained properly. There is no way we can find 50 people a year willing to train these mediocre talents. All we can do is release them onto the market and hope.
As I said I am not against day traders, I have done it myself many times, it is in the rules, but I wish the rules made it a lot less profitable (1 month minimum contracts, at least 80% tax on anyone besides draft picks who have been on your team less than a season) so that I would not be encouraged to do it to compete.
But the day traders who deal in U21NT prospects and don't train them really cause trouble for small nations with few good players.