At this point, there have been no public demands of a release or a trade. Peterson could make life uncomfortable for the Vikings by asking to leave, but there are plenty of reasons to believe he'll wind up staying in Minnesota. The Vikings are clearly comfortable paying Peterson his $12.75 million salary in 2015, which makes him the game's highest paid running back. Minnesota wants to win in 2015, and getting rid of Peterson isn't going to help them.
Peterson welcomed Vikings coach Mike Zimmer and general manager Rick Spielman into his home earlier this month, which is a strong sign the two sides could work something out. Giving Peterson a restructured contract with more guaranteed money would be one way to get him back in the fold. While teams like the Arizona Cardinals could have interest in Peterson, it's unclear if they would pay him as much money as the Vikings.
The most likely outcome is that Peterson stays with the Vikings. The only way to get him out of Minnesota will be with a big draft pick and a big contract.