3 moves Tennessee Titans need to make after hiring Brian Callahan as head coach

Now that ex-Bengals OC Brian Callahan has been officially named as the next head coach of the Tennessee Titans, attention pretty quickly turns towards what's next. There are already reports out there that Callahan plans to bring in his dad, longtime and well-respected offensive line coach Bill Callahan, in to run the line in Tennessee. After that, not a whole lot is known right now about what Callahan's plan to help develop second-year quarterback Will Levis – and the offense around him – looks like. So what comes next for the Titans? Here are three options.