According to Aaron Wilson of the Baltimore Sun, teams have been notified that no contract would be approved for Walcott until NFL commissioner Roger Goodell reviews him under the personal conduct policy.
The Browns promptly released Walcott after he was arrested for attempted murder. The undrafted rookie linebacker from Virginia had signed after a tryout.
The only way he’s getting back in the league is if he’s found innocent, and that may not be enough. For fringe players, any blemish is often enough for teams to declare them more trouble than they’re worth, and attempted murder is more than just a blemish.