I don't think the possibility of a pulldown would arise later; if they're going to be recruitable, they'll be eligible for pull down at the beginning of recruiting. I don't think D1 players ever drop, but sometimes if they're within 70 (or maybe 100) miles, unranked, and you have high prestige they may allow you to pull them down. Of course you have to call and find out, not many will, but once in a while...