Brown is still currently counting toward cap.
Colbert intimating that they'd dip a toe into the FA pool a week or so ago makes me think they may be willing to go after guy at Bryant's level, but Bryant in particular is likely to be a relatively hot commodity. He's scheme versatile and is a really, really good run defender.
I expect they are going to make a concerted effort to re-sign Worilds before they attempt to sign anyone else of note though....which could work against them if Worilds, as he should be expected to do, delays signing with anyone to try and run up his going rate. I would expect he doesn't sign until Orakpo does, actually. I assume there are plenty of teams out there who will prefer him to Worilds, even though I think he's kind of overrated, since he's "more proven."