Jared Allen to the market in 2014?

The Minnesota Vikings have a lot of exciting things going on: their superhero running back just led the NFL in rushing less than a year after tearing his ACL; they have a new line of jerseys (and a slightly altered logo) that they've debuted this offseason; they unveiled plans for a new stadium with a Skynet-esque "self-cleaning" roof. But beneath the surface, there's a financial issue lingering: namely, star DE Jared Allen's contract with the club is expiring after 2013.