White Sox assistant general manager Rick Hahn topped SI's list of front office assistants who are in line to become general managers.
A few weeks ago, speculation arose that Hahn could head to the Cubs if the North Siders were to part ways with Jim Hendry after this season. It's certainly a scenario that makes sense if Hendry indeed is canned, and Will Carroll/Dan Wade/Joe Conte aren't helping the "keep Hahn with the Sox" movement (is that a thing? Well, it's a thing now):
The one problem with Hahn is that he might be too good at his job. The Chicagoland native has become such an integral part of the White Sox front office that it will take the perfect offer to get him to move. Many inside baseball think that Hahn's best opportunity will be to take over from Kenny Williams, though there's no indication that's going to happen soon. Hahn has interviewed for jobs in the past, but has seldom pushed for a job, furthering the thought that he's "too comfortable." Some AGM's like Hahn, David Forst in Oakland, or Chris Antonetti in Cleveland had enough autonomy and enough of a voice before moving up that moving to some jobs would be lateral. Many expected Hahn to be a stronger candidate for the Padres job a couple years ago due to his longtime connections to Padres owner Jeff Moorad, but some think it's that very association that held him back. Hahn's name is at the top of any list an owner will put together this offseason. --Sports Illustrated
Hahn's quote about Mike Trout is well worth clicking the link, by the way.
Whenever Kenny Williams does leave his post as general manager of the Sox, Hahn would be an ideal candidate to replace him -- as Will Carroll/Dan Wade/Joe Conte wrote in the above piece.
Whatever your opinion of Williams may be, he's not going to be fired any time soon. The best chance of him leaving is by resignation, which isn't something that can exactly be predicted.
Unfortunately, the Sox may lose Hahn before he has a chance to assume the role of White Sox GM. He's been very good in an assistant's role, and even if a move to being a team's lead GM is semantics, it's still a move Hahn deserves.
It's hardly a doom-and-gloom scenario -- for all we know, Hahn could stay with the Sox and wait until Williams officially hands him the keys to the organization. Even if Hahn leaves, that doesn't spell disaster -- but hiring a good baseball mind from within would certainly be nice.