Favre has communicated his potential desire to coach Mike McCarthy but talks have not advanced to a substantive stage, a Packers source said.
The source said the Packers would be reluctant to open the door for Favre because "Brett retired for the right reasons, even though I know his family is tugging on him [to play]."
Another source conceded Favre was "getting the itch" to play football in 2008.
However, Favre's agent downplayed the likelihood that the quarterback could un-retire or that he was prepared to report to camp July 28.
"As far as I know, right now, Brett Favre is retired and until he tells me something different, that's what it is," James "Bus" Cook, Favre's agent, said.
Well, here we go again. Prepare to spend your 4th of July weekend with barbeques, fireworks and endless Brett Favre rumors.
UPDATE: Brett Favre responded later this evening, saying, "It's all rumor."