As a Brit who doesn't watch college football, I can't really offer my own opinions on players - all I can do is read what others say, both forum posters on here and 'professional' evaluators on other sites.
I read these two forceful comdemnations of Carlos Dunlop - can anyone who has seen him regularly comment?
I read that. No heart means undraftable. Forget him is my opinion.
You shouldn't have to "light a fire" under someone's bum to get them to play.