Lane Kiffin is leaving some large shoes to fill in Tuscaloosa, Alabama.

The Alabama assistant is reportedly leaving to take over at Florida Atlantic, which means Nick Saban's squad needs a new offensive coordinator. It will be an important hire -- or promotion -- for Saban. While the Crimson Tide have never had a lot of trouble scoring points, Kiffin's arrival took Alabama's offense to another level.

Not only did Kiffin modernize it, he improved it. Over six seasons from 2008-13, Alabama averaged 34.9 points. In three seasons under Kiffin, the Tide have scored 37.4 points. And he has accomplished that by tutoring three different starting quarterbacks, including a true freshman in Jalen Hurts this season.

So who will be tasked with making sure that improvement continues after Kiffin stays on through the College Football Playoff? Here are the three most likely candidates at this point, and all of them happen to already be in Tuscaloosa.

Steve Sarkisian, Alabama offensive analyst: Sarkisian has been rumored to be a favorite for the gig all season as it appeared clear Kiffin was heading elsewhere at year's end. Ever since Sarkisian was brought on to Alabama's staff to be an analyst, many assumed he would be Kiffin's eventual replacement. Sarkisian is a logical choice considering he has worked on the same staff as Kiffin for years and has head coaching experience of his own. Sark spent seven seasons as an assistant at Southern California -- including two as its offensive coordinator -- and five more seasons in charge at Washington. He also replaced Kiffin as USC's coach in 2014 but lost his job in 2015. At the time, USC athletic director Pat Haden said Sarkisian was "not healthy," and there were reports that he had shown up to practice intoxicated.

Running Alabama's offense and working for an extended period under Saban could go a long way toward repairing Sarkisian's image in the coaching world just like it did that of Kiffin. That said, Sarkisian is also reportedly a candidate at LSU, so Saban must act fast if he hopes to keep Sark on board.

Mike Locksley, Alabama offensive analyst: Locksley currently serves in the same role as Sarkisian and like him, Locksley has prior experience as both an offensive coordinator and head coach. Most of Locksley's experience has been as a coordinator. After beginning his coaching career on the defensive side of the ball, he switched over to offense in 1996. Since then, he has spent eight seasons as an offensive coordinator at Illinois and Maryland. Between those two jobs he spent three years as head coach at New Mexico, where he went 2-26. Locksley also served as interim coach at Maryland last year after the firing of Randy Edsall.

Billy Napier, Alabama wide receivers coach: Napier is not an offensive analyst at Alabama, but he did serve in that role once upon a time! Currently coaching wideouts in Tuscaloosa, he has been in that role learning under Saban for the past four years and Kiffin for the past three. While Napier has plenty of experience at Alabama as well as Clemson and Colorado State, he has never been a coordinator. It's hard to imagine that the first offense Napier runs will be Alabama's, but Saban knows him and is comfortable with him, so it cannot be ruled out. However, some believe he may even be the front-runner.