NASHVILLE, Tenn. (AP) — The Tennessee Titans have been among the league’s biggest spenders in free agency, and they still won’t be able to fill all the remaining holes with only seven selections in this NFL draft.

Neither general manager Ran Carthon nor first-year head coach Brian Callahan are giving hints to the position Tennessee will fill first. Even after a busy start to free agency, this remains a roster under major renovation after losing 18 of 24 games to cost Mike Vrabel his job after six seasons.

Callahan, who will call the offense after being a coordinator at Cincinnati, has dropped hints that a coach can never have enough fast, explosive players. Carthon knows the Titans still must bulk up both the offensive and defensive lines.

“We’re still working on that,” Carthon said.

Callahan said they know what they need for a team that went 6-11 with the Titans working their way back up from the bottom of the AFC South.