GREEN BAY, Wis. -- Lots of questions about Brett Favre's future are still unanswered in Green Bay after an evening news conference Monday by Packers coach Mike McCarthy was postponed and rescheduled for later Tuesday.

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Favre was activated Monday by the Green Bay Packers, just a day after NFL commissioner Roger Goodell accepted the quarterback's reinstatement request.

To make room for Favre, the team placed cornerback Condrew Allen on injured reserve with a knee injury.

A team official said that the news conference set for Monday was postponed because McCarthy and Favre were still talking about the upcoming season. The two left Lambeau Field separately in their SUVs shortly before midnight Monday.

Earlier on Monday, McCarthy said there have been no promises. Given Favre's track record of waffling on his football future, McCarthy said he first wants to talk to Favre before making any decision on opening the quarterback job up to competition.

It's not yet clear what role Favre will play, but upstart Aaron Rodgers said he's up for competing against the legendary quarterback.

The official word from the organization is that general manager Ted Thompson and McCarthy have a plan for Favre but won't share it publically until later.

Now that Favre is reinstated, the Packers have three options. The most unrealistic is just releasing him from his contract. The team could trade him and there remain a lot of rumors the Packers are still trying to make a deal. Lastly, the club could just give Favre a shot at the quarterback position.

The team had offered Favre a long-term, multimillion-dollar marketing agreement that likely would have kept him retired. Favre's decision to report to camp makes such an agreement far less likely.

Favre missed out on the action at Sunday night's team scrimmage, but he was spotted at the stadium. The three-time league MVP took in the family fun night practice from his luxury box high above Lambeau Field.

Favre, 38, originally announced his retirement in March at a tear-filled press conference before having second thoughts. The Packers elevated Rodgers to the top of the depth chart, and McCarthy had insisted that Rodgers would be his No. 1 signal-caller even if Favre returned.

In related news, Goodell announced on Monday that he has ruled that the Minnesota Vikings didn't tamper with Favre in trying to get the quarterback to sign with them.

Goodell said that while there were conversations between the then-retired Favre and Vikings coaches, none of the conversations suggested Favre was soliciting a job or that anyone was soliciting his services.

The Packers had filed the charges, based at least in part between records of phone conversations between Favre and Darrell Bevell, Minnesota's offensive coordinator. Bevell is a former Green Bay assistant and a friend of Favre's.

Meanwhile, Vikings coach Brad Childress said that his team hasn't had contact with the Packers regarding a potential trade for Favre.

Childress dismissed a report in the Milwaukee Journal Sentinel that said the Packers have made preliminary contact with the Vikings about Favre.

Packers general manager Ted Thompson said last week that he wouldn't consider trading Favre to an NFC North competitor.

Last season, Favre led the Packers to the NFC Championship Game after throwing for 4,155 yards with 28 touchdowns and compiling a 95.7 passer rating during the regular season.

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