Several of you have pointed out an interesting Twitter exchange between Cardinals cornerback Patrick Peterson and free-agent cornerback Antonio Cromartie.

The messages, far less interesting than cornerbacks Richard Sherman and DeAngelo Hall trading barbs, seem to suggest that Cromartie will be joining the Cardinals very soon.

Not yet, a source with knowledge of the situation tells PFT.

“Nothing [is] happening,” the source said regarding the possibility of Cromartie joining the Cardinals. The source added that the Twitter messages aren’t surprising, because Peterson has been actively recruiting Cromartie to join the team.