Liufau looks like a keeper. I will give credit to Zimmer on that one... he was universally rated as a Day 3 guy on the internet scouting big boards, but Zimmer liked what he showed between the ears.
Overshown is a legit game changer when healthy, like I think he has All-Pro level ability. Of course, health is the question mark.
Sanborn's about where he needs to be, as a borderline backup/starter. Overshown's health means that we need a good backup like him, and we have one.
Shemar James is another coaching staff favorite who's been putting nothing but good reps together in preseason and camp.
IMO, Murray is a writeoff. He's seen starter snaps for five years in the league now, and has been nothing but terrible. Dude just doesn't have it. I wouldn't be surprised if James is a better NFL player even right now.
Overall, I really like this group. We have a playmaker, two workmen, and a young bet placed.