Matt Barrows has a nice look at possible surprise players to look out for to make the 53 man.
I like his choices, Joe Holland could push for a spot on STs primarily. Bakhtiari will push Cam Johnson for that 4th OLB spot, possible both make it at expense of Haralson, who still needs a pay cut, as I don't think he is guaranteed a spot at 2.87M
Thomas(Stanford FS) has been injury prone and is a smaller FS like Trenton Robinson, so could be a battle there for the backup FS spot.
Holcomb is a possible spot, as he was injured, and will finally have a offseason to prove himself, so I can see him pushing Brock and Cox.
Also note, LaMichael James, Chris Owusu and Matthew Masifilo aren't attending OTAs due to not graduating officially. It's a rule by the NFL, reason why Andrew Luck isn't with the Colts in INDY, he needs to meet requirements for graduation.
Also I like the new rule that 1 players that is placed on IR can come back after week 8 if healthy of course.