MINNEAPOLIS -- The Minnesota Vikings, already bound for a glitzy new stadium, could have another move in store.

The football team's ownership announced Friday the signing of a purchase agreement for an Eagan property that could become its headquarters and training facility. The 185-acre parcel was once home to Northwest Airlines' corporate headquarters.

The Vikings main off-the-field presence has been in Eden Prairie for more than 30 years. But chief operating officer Kevin Warren says the team has outgrown Winter Park and faces restraints on expansion there.

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A move is not a done deal and the team will have time to evaluate the Eagan land before locking it in.

Of course, the Vikings bigger upcoming move will be into the $1 billion-plus stadium in Minneapolis due to open in 2016.