Clearly, any A-Rod talk is pure speculation at this point. A great deal stands in the way of Alex Rodriguez leaving New York. The Cubs don't have much to make it an even trade in terms of production(they have some oft-injured talent and a bunch of bad contracts), and A-Rod's contract would undoubtedly require some creative financial re-arranging. Plus, Rodriguez has been extremely vocal about his desire to remain a Yankee, and as the article notes, he has a no-trade clause.
So, for anything to happen, the Yankees are going to have to really want to get rid of the guy, and Alex is going to have to change his tune about wanting to be a Yankee.
Still, its an interesting prelude to what I'm guessing will be the east coast media's main topic of discussion for the next six months(along with the annual Manny Ramirez trade rumors).