The Cardinals have released defensive lineman Keilen Dykes, according to ESPN.com, but there is no indication of an addition to the roster.
It could be tight end Ben Patrick, who returned to the team Monday after serving a four-game suspension. The Cardinals have received a roster exemption for Patrick but would just need to activate him to fill the available spot on the roster.
Dykes started the season on the practice squad, but was signed to the 53-man roster after the first week. I assume the Cardinals are interested in re-signing him to the practice squad.