I think he stays in Pinstripes regardless of the situation.
Although the Yankees are only on the hook for around $15 mill/season for Arod...not the full $25/$26 mill...thats still a pretty penny in today's market.
There's only a hand full of big market salary teams...and you can already count out a bunch of 'em, incl: Mets, Red Sox, etc.
The only logical team I can figure is the Angels...but a signing like Soriano makes more sense, considering the amount of infielder prospects they have & very limited OF depth.