A credible source wouldn't deny a rumor that the Vikings have already signed Brett Favre. Pro Football Talk reported the story on Sunday afternoon, claiming that Minnesota and the quarterback are simply waiting to announce the news. PFT got wind of the rumor and went to a source "that would know the truth" in order to investigate. "I will not deny it either, I will leave it at that," the source told Pro Football Talk. If true, it's possible that Favre may have signed a deal with the Vikings, but that the contract hasn't been submitted to the NFL yet.