The linebacker depth is certainly an area to monitor when camp opens. I’d bet Mayo and Hightower open on PUP, Collins is the question mark as he’s been in and out of OTAs. Not sure what’s going on there.
And then even Fletcher has been out as well. So yeah, we’re really looking at James Morris and Darius Fleming as guys who might be called on to step up. It’s really not out of the question that the opening day linebackers are Fleming (SLB), Collins (MLB), Fletcher (WLB).
The rest are interesting young guys and vet free agents who have mostly been special teamers/fill-ins.
I get into a lot of depth in this area in the Season Preview which will be available in the next week or so.