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Arizona signed McCollum on Saturday.

McCollum signed with Seattle as an undrafted free agent in May but was waived in early June. He'll now get a look from the Cardinals after the team placed Quez Watkins (undisclosed) on injured reserve. McCollum is a long shot to make Arizona's final roster, but he'll have a chance to make his case for a spot on the team or the practice squad throughout the remainder of training camp.

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