Tom Crean has missed it 5x now in 9 years.
I believe Knight missed it in 84 (Dakich was senior and Alford was soph) and Davis missed it in 2003 when the Big Ten realized Deron Williams was better than his HS teammate Bracey Wright. ;)
Tom Crean inherited significant NCAA sanctions from Sampson. Check out the roster he inherited:
https://en.wikipedia.org/wiki/2008%E2%80%9309_Indiana_Hoosiers_men%27s_basketball_team