The Cardinals placed DE Kenny Iwebema (knee) on I.R. and re-signed LB Cyril Obiozor from the Chargers' practice squad on Tuesday.
Obiozor played in one game for the Cardinals this season and was inactive for another after joining the team off waivers from the Packers on Sept. 6. He played in two games with the Chargers and recorded one special-teams tackle.
Iwebema had just one tackle in seven games this season.