MILWAUKEE -- Brett Favre used a cell phone issued by the Green Bay Packers to make repeated calls to Minnesota Vikings head coach, Brad Childress and offensive coordinator, Darrell Bevell, according to the Milwaukee Journal Sentinel.

TALKBACK: What Do You Think?

The Packers filed tampering charges last week against the Vikings, claiming the team had illegal contact with Favre. They suspect that interest from Minnesota is the main reason Favre has changed his mind about playing in 2008.

Favre's rights belong to the Packers until his current contract expires after the 2010 season.

NFL commissioner Roger Goodell is keeping an eye on the ongoing rift between the Packers and Favre, according to The Associated Press.

The Associated Press reported that a person with direct knowledge of the situation said Goodell has spoken with Packers management several times recently as tensions continue to mount between the three-time MVP and his team.

ESPN.com first reported Goodell's interest in the Favre predicament. The Web site indicated that the commissioner encouraged Packers general manager Ted Thompson to survey teams around the league to try to find a trade partner in hopes of resolving it quickly.

The Packers have contacted multiple teams about a possible trade for Favre, according to NFL.com.

Green Bay is exploring all its options and that means inquiring what teams would be willing to part with for Favre's services.

The key to any trade would revolve around Favre's willingness to go to that team because a trade could happen and he not happy with it and decide not to report, WISC-TV reported.

The Packers are said to have contacted teams in both the AFC and NFC.

The Packers are committed to moving forward with Aaron Rodgers as their starter. With Favre apparently still intent on reversing his decision to retire in March, the best outcome for both parties could be a trade.