Jay Glazer of FoxSports.com is reporting that Brett Favre spends his free time giving insider tips to upcoming opponents of the Green Bay Packers.

Several sources have told FOX Sports that Favre earlier this year phoned the Detroit Lions prior to their battle versus Favre’s old team, the Green Bay Packers, and gave them a rundown of the nuances of what Green Bay does on offense. According to the sources, Favre actually spent over an hour on the phone with Lions coaches, who were connected with Favre by then-team president Matt Millen.

While the Lions still lost and the Packers and Favre’s replacement Aaron Rodgers played well, it’s still baffling that the Packers legend would spend such a significant chunk of time giving tips to an opponent of his long-time franchise.

Other teams the Packers have played had also heard about the Favre coaching clinic with Detroit. In addition, there have been rumors that Favre has spoken to other teams giving them information, but most of those teams insist they have not heard from the famed gunslinger.

Glazer goes onto say that there’s nothing in the rule book that says Favre can’t do this, but that just doesn’t pass the smell test. If true, Favre is actively working against his old team, the franchise where he spent 16 years as the starting quarterback. Not only that, but shouldn’t he be spending his free time with his family? After all, that was one of the main reasons he gave for walking away from Green Bay in the first place.

We all know he still has a beef with Ted Thompson, but to work against Packer fans like this is simply beneath him. He’s getting into “tarnish the legacy” territory here.

Say it ain’t so, Brett. Say it ain’t so.

10/22 Update: Indeed, Favre did say it ain’t so. Keep up with the story by hitting our Lionsgate link.