It's probably already been said on here but the perfect choice for the DNI position at this stage of the movie would be Adm. Mike Rogers who served under Obama.
What better way then to re-enter the movie after leaving (publicly) right at the very beginning?
There's no real possibility his hearings or confirmation could be denied by the Dem's if he was qualified enough for Obama.
This seems almost too perfect of a set-up or plan.
He'd be the perfect one to finish what he might've started.