I'm not trying to acquit Peterson. I think in a sane world (meaning any year, past or future, other than 2014), Peterson probably would have been looking at maybe a 6 game suspension for what he did, maybe less. The other 9 games he will miss will be because of the mistakes of Ray Rice and Roger Goodell. As far as I am concerned, Peterson has paid his debt to society and then some. People can have their own opinion, but IMO it is time to move on. That doesn't mean we have to approve of what he did, but the NFL has been about second chances in the past.
My assumption is that Peterson will be cut by Minnesota. He's owed something like $14 million for his age 30 season. I'm not sure if Minnesota ever had any intention to honor the 2015 portion of his contract from the start. And nobody is trading for that money. Would AP be willing to restructure in a trade knowing that he'd probably get more money and more control over his situation as a UFA once cut? I doubt it. I think AP will end up a free agent.
I think Seattle would only pursue AP if nobody wants him and he's just sitting out there (which IMO, is unlikely. There will be more than a few interested teams). But in this unlikely scenario, if you can get Peterson for $3 million on a one year deal, I don't think Seattle would pass on that in the event that Lynch is gone. I don't think Seattle would be concerned with AP being a perfect fit in the running game, his talent level is so high that he could probably excel anywhere immediately.
I hear this speculation of AP to Seattle a lot on the radio and in podcasts, but I don't see it happening without a lot of things breaking a certain way.
If a trade did happen, you'd no doubt here a lot of people bringing up the Percy trade again as if there is any relevance. It hasn't even happened yet and I'm already starting to feel annoyed by it.