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Officially, the Vikings can now speak to running back Adrian Peterson. Unofficially, it sounds like multiple teams have been talking to someone.

On Thursday, Adrian’s father, Nelson Peterson, told Chris Tomasson of the St. Paul Pioneer Press that the elder Peterson has heard “rumors” of three potential destinations for Adrian.

“I’ve heard rumors, Arizona,” Nelson Peterson told Tomasson. “I’ve also heard the rumors of Indianapolis and the Colts, going there with a quarterback the caliber of [Andrew] Luck. I’ve also heard the Cowboys, coming back home with the Cowboys, behind that offensive line that they have.”

Nelson Peterson didn’t say who he heard the rumors from. All three teams make sense, and they mesh with rumors that have been making the rounds in league circles for the past few months.

Regardless of whether Adrian ends up in Arizona now, Nelson has strong feelings about where the Cardinals currently would be if they’d taken Adrian eight years ago.

“Arizona had the opportunity to draft him and they didn’t,” Nelson Peterson said. “They had an opportunity to take him in 2007 with the No. 4 pick and they went and picked Levi Brown. If they would have taken Adrian Peterson, then [quarterback] Kurt Warner would probably still be playing and they probably would have numerous Super Bowls.

“Can you imagine [Adrian] with Kurt Warner and with Larry Fitzgerald in his prime? Oh, man, Arizona would probably have a couple of Super Bowls by now.”

With Adrian turning 30 next month, the window toward being a key piece of a Super Bowl contender is closing. Before he leaves Minnesota in search of a team that may be on the doorstep, he needs to ask himself whether the Vikings may be laying the foundation to get there, sooner than later.