The second-year UDFA out of South Carolina completed 24-of-40 passes for 277 yards and a 2:2 TD: INT ratio last preseason.
He's a camp body for when the Rams release or trade Nick Foles, who hasn't reported to the team.
Manziel remains a long shot to ever play in the NFL again.
Kinne transitioned from quarterback to wide receiver this offseason in an effort to make the final roster.
A weak-armed but tough prospect who will likely spend his NFL career holding a clipboard, Carden has been compared to Bruce Gradkowski by CBS Sports' Dane Brugler.
New Orleans scheduled Neal for a workout on Friday, and he was signed shortly after.
Rector (6’0/193) earn playing time on offense in each of his four seasons at Stanford, graduating with a career 104-1,681-15 (16.2 YPR) receiving line but never reaching 35 catches in an individual year.
Rector blazed 4.42 with an explosive 10-foot-9 broad jump at the Combine.
A failed 2015 third-round pick out of Colorado State, Grayson never made a move to establish himself as Drew Brees' long-term backup in New Orleans.
The Saints chose Luke Mc Cown over him last year and Chase Daniel this year.
Along with Kinne, Philadelphia cut CB Marc Anthony, S Brandan Bishop, C Mike Coccia, T Kevin Graf, DE Alfy Hill, WR Mike Johnson, OLB Dasman Mc Cullum, WR Josh Reese, DE Jeremy Towns, TE Justin Tukes and OL Jared Wheeler.