Toure seems like the kind of personality who is willing and eager to put in the work to perfect a shot. ISU has capable coaches who can get him there. I'm not predicting a Naz Long jump in shooting ability between Fr and So seasons (.278 - .400, +3.4 att), but I can always hope for it... I would be satisfied with a Tamin Lipsey jump in shooting ability between Fr and So seasons (.200 - .391, +2.4 att).
As a note, Killyan was shooting .333 from 3 - which is enough to make defenses respect him - before his 0 fer slump started with BYU. He had hit at least one in 7 of the 8 games before BYU. He has gone 0-11 in the five games since. It is as much a confidence thing as anything else.