Jackson may be too raw for a roster spot at tackle this season - practice squad seems likely.
Shelton can play guard and center and supposedly has looked good. maybe switch the 2.
TE's - Hopkins is likely gone. Blanton has a better chance to stick around if they keep 4.
OLB - I think Lewis is put on IR or just released with a medical designation. Guy can't practice or play. they would have 4 OLB's with Lawler and Obo as back ups.
For RB - I think they add a vet (maybe 2) at final cutdown and send Funk to practice squad.