Here's a list of all the players who transferred to BYU from a JuCo and played in the last 10 years:
Skyler Halford
Raul Delgado
Augustin Ambrosino
Stephen Rogers
Craig Cusick
Logan Magnusson
Lamont Morgan, Jr
Archie Rose
Ben Murdock
Sam Burgess
Rashaun Broadus
Keena Young
Brock Reichner
Fernando Malaman
Missing on Sai Tummala a couple years ago and Neal Monson last year are not significant in my opinion when you consider 1) how unimpressive both have been at their respective schools and 2) how bad BYU has been at evaluating JuCo talent over the last decade. Just my humble opinion.