The announcements were made by Jets General Manager Mike Tannenbaum.
Oldenburg (6-5, 300, Colorado State) was signed to the Jets practice squad on Sept. 20. He was selected by the New England Patriots in the fifth round (171st overall) of the 2007 NFL Draft, waived by the Patriots on Sept. 1, signed to the Patriots practice squad on Sept. 3 and released on Sept. 19. The Gillette, WY native appeared in 36 games at Colorado State, registering 34 starts on the offensive line.
Turner (6-4, 308, New Mexico), signed by the Jets as an undrafted rookie free agent on May 16, was waived on Sept. 1 and signed to the practice squad on Sept. 3. He started at both right tackle and right guard for the University of New Mexico, where he was credited with 23 big-effort plays, 10 cut blocks and 16 pins by the Lobos’ coaching staff in 2006. The Austin, TX native started 45 games over four years.
Collins (5-10, 190, Rutgers) was originally signed by the Jets as an undrafted rookie free agent on Aug. 2, waived on Sept. 1, signed to the Jets practice squad on Sept. 3, released on Oct. 10, re-signed to the practice squad on Nov. 13 and released on Nov. 29. He recorded 68 tackles, two interceptions and four fumble recoveries during four seasons at Rutgers.
Mackey (6-1, 233, Syracuse) signed with the Jets on Aug. 4 before being traded to the Tampa Bay Buccaneers on Aug. 21 for an undisclosed draft pick. He was waived by the Buccaneers on Sept. 1, signed to the Jets practice squad on Oct. 4 and released on Oct. 29. He played four years at Syracuse, recording 202 tackles (106 solo), three sacks, one interception and one fumble recovery. The Freeport, NY, native earned All-Nassau County and All-Long Island honors as a senior at Freeport HS and is a great nephew of NFL Hall of Famer John Mackey.