Even with an active start to free agency in which they’ve addressed the safety, wide receiver, and tight end positions, the Ravens still have plenty of work to do if they want to bounce back from last year’s 5-11 campaign. While pass rusher, cornerback, and left tackle have been discussed at great length, an inside linebacker spot is wide open next to C.J. Mosley with the recently-released Daryl Smith signing with Tampa Bay, ending any thought about his potential return. John Harbaugh mentioned the predictable candidates — Zach Orr, Arthur Brown, and Albert McClellan — to replace the veteran Smith, but the head coach discussed another interesting option when speaking to reporters at the league meetings earlier this week. “We could move a safety down in there,” Harbaugh said. “A lot of teams are doing that now, and one of those guys might move in there. We have the draft still in front of us, so there’s going to be competition. That’s how we like it.” Harbaugh didn’t mention any names when discussing the possibility of a safety shifting to linebacker, but other safeties such as Mark Barron of Los Angeles and Arizona’s Deone Bucannon have successfully made that transition