Arizona Cardinals wide receiver DeAndre Hopkins Ron Chenoy-USA TODAY Sports

NFL teams are free to negotiate with DeAndre Hopkins after the star wide receiver was released by the Arizona Cardinals this week, but those who are interested are apparently proceeding with caution.

Hopkins does not have an agent. With the veteran technically representing himself in any free-agent contract negotiations, Mike Florio reports that teams have chosen to not communicate with Hopkins via email. The reason for that is that team executives do not want to unknowingly communicate with a non-certified agent who is pretending to be Hopkins.

Back in March, the NFL sent a memo to all 32 teams reminding them that they are prohibited from negotiating with player representatives who are not certified by the NFL Players Association. At the time, it was believed that an unauthorized individual was attempting to communicate with teams on behalf of Lamar Jackson, who also does not have an agent.

Florio notes that uncertified player representatives have been known to communicate with teams either by pretending to be the player or through burner email accounts. One team became aware of the practice when they received an email from a player who was on the practice field at the time the email was sent.

By insisting on either telephone, video chat or in-person communications with Hopkins, teams can be certain that they are negotiating with him and him only.

Hopkins was released by the Cardinals after they were unable to find a trade suitor for him. He has been repeatedly linked to one AFC team, though he will likely draw interest from plenty of others.

More must-reads:

TODAY'S BEST
Mavericks advance to Western Conference Finals aided by controversial call late
Connor McDavid, Oilers hammer Canucks to force Game 7
Tyson Fury-Oleksandr Usyk epic increases excitement for potential rematch
Seize the Grey wins in muddy Preakness
Even Mike Budenholzer admits the Suns need a point guard
Watch: Juan Soto's first multi-homer game as a Yankee
Xander Schauffele, Collin Morikawa lead at PGA Championship
Knicks could get major boost for Game 7 showdown with Pacers
Giants All-Star pitcher suffers setback in recovery from injury
Panthers star named winner of 2024 Selke Trophy
WNBA to investigate $100,000 sponsorship deals for Aces players
Tiger Woods blames one big factor for missing the cut at PGA Championship
'Ain't good enough': Draymond Green claims Celtics must 'win it all' or it's a 'failure'
Blue Jays GM wants struggling club to feel 'massive sense of urgency'
Raptors expected to flip former NBA champion during the offseason
MLB insider reveals Mets' massive extension offer that Pete Alonso turned down
Celtics legend provides update after gruesome finger injury
Bulls hire former NBA head coach as top assistant
Chiefs move on from young running back
20-year MLB veteran working out, unsure about playing future

Want more Cardinals news?

Join the hundreds of thousands of fans who start their day with Yardbarker's Morning Bark, the best newsletter in sports.