Sure, if he grades out well enough he absolutely should do it. I'm assuming, without further information, that
he's grading out at most at a second round level. If he's projected late 1st, early 2nd, he should probably go. If he's mid-to-late 2nd round or worse he'd be better off coming back another year. It would be amazing to see him sign a multi-year deal as a 1st rounder or early 2nd rounder.