Arizona placed Gillikin (foot) on injured reserve Saturday, Theo Mackie of The Arizona Republic reports.
Gillikin (ankle) is questionable to return to Sunday's contest against the Seahawks.
Gillikin signed a two-year contract with the Cardinals on Wednesday, Zach Gershman of the team's official site reports.
Gillikin (back) is healthy for the start of training camp, Todd Graffagnini of the Saints' official site reports.
The Saints placed Gillikin (back) on injured reserve Wednesday, per the league's official transactions report.
GIllikin is on the Saints' final 53-man roster, Amie Just of Nola.com reports.