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The Arizona Cardinals announced on Thursday that linebacker Ernie Sims, whom they signed in the offseason, was released.
Sims was signed the beginning of June and had to catch up with the the defensive schemes. By the end of mini-camp, head coach Bruce Arians said Sims was not doing so well. He was buried on the depth chart recently, so the move either indicates that there will be another linebacker signed to replace him or they were extending the courtesy to allow him time to be able to latch on with another team with time still in the preseason.
Sims' release, combined with the retirement of tight end Jake Ballard, puts the Cardinals roster at 88 players, which leaves two open roster spots.
I would expect an announcement in the next day or two of a pair of signings, so they have enough bodies in camp to practice.
Update:
Arians stated in his Thursday media session that Sims wasn't a good fit. He felt that with Sums being a veteran, the team "owed it to him" to find a better fit for him. The team is "in no hurry" to fill the other two roster spots.