Ever since they released S Scott, whom was the clear #3, I've been thinking they'll need to look at the roster cuts from other teams...
Anthony Harris and Tony Jefferson II make a ton of sense as a backup Starter, but Rudy Ford makes a ton of sense from anST ace perspective.
OJ Howard is currently visiting the Bengals and took a physical for them, but they also claimed a TE, which means they need another open spot before they can sign Howard. Howard's big thing has always been his potential, but he's never come close to living up to his potential, so I feel like his name and hype are bigger than his current talent are. I think it depends more on what you think of the current group of guys we have...
Devon Kennard, I get wanting to look at Edge players, but it needs to be noted that Kennard has only played edge rusher for two years... the rest of his 8 year NFL career and the majority of his college time have been as an off-ball LB playing LB in a 4-3 defense. Just saying he might be a better fit for ILB than OLB.