Let's say, hypothetically, there is a rationale that we geniuses don't know about for holding back a scholarship.
Let's say, for a hypothetical example, that you give a second-semester scholarship to a walk-on who will, most assuredly, graduate. Perhaps that will shore-up graduation requirements that might be hurt by someone else leaving for no good reason.
This theory is as good as any of the this-is-ridiculous certainty some seem to have.