Where it stands now...
1) He was tried at WR last year. There was one very basic issue holding him back -- catching the ball. As a route-runner, he was a true freshman, and wasn't a full-time WR in high school so there will always be issues there. But he didn't have WR hands. I've had people try to argue with me before that he was great catching the ball in high school and to that, I say (a) this isn't high school and (b) I'm just telling you why he moved to defense to begin with. Anyone who sees the difference between HS defensive backs and the college level knows that catching the ball is a bigger deal at this level when the hits come faster and harder.
2) At spring, he did fine in one-on-one but struggled with the scheme. This was what got Lawrence behind, too, but Lawrence had the added issue of friction with the coaches. Hence, he's not here anymore. The fact of the matter is that this is the most complex defense in the conference (Monte Kiffin's included) and it has the unfortunate effect of processing out a lot of great HS athletes that can't make the mental transition once they get here. There's a reason Saban helps a very good assistant coach (Smart) coach the DBs personally.
3) Alabama's fifth cornerback is a guy named Chris Rogers. Rogers could start for all but three SEC teams this year (UA, LSU, UF). If he was at one of the other nine teams, he'd start, but at Alabama, he's the fifth corner. God bless Chris Rogers, because he's turned into a special teams demon and is an important part of the program but he has to wonder what would have been had be gone to FSU or Maryland, I'm sure. Having said that, when he's the fifth corner and Scott was the sixth, simple math tells you Scott isn't going to play much.
4) Going into next year, Alabama could very well be replacing four of its top five DBs (Arenas, Jackson, M.Johnson, Woodall, with Barron the only returning guy). If Jackson decides to go pro (and I believe he'll at least request an evaluation), Alabama will need three new corners. The plan right now is for Jackson to return, with probably Kirkpatrick the other starter and then you still have to have a third corner, because Robby Green probably starts at FS and Barron moves to SS full-time. In addition, the dime position will be open (Sharrief and King are seniors). I expect Scott to get meaningful snaps but it will probably come next year in the Marquis Johnson role rather than the Star role, which involves a bit of freestyling and instinct.
And, like someone noted, there will be a need for a new punt and kick returner.