Yeah, right. And I'm the tooth fairy. (Actually, I am the tooth fairy, come to think of it. But don't tell my daughters.)
A slightly more realistic rumor is that the A's might be interested in acquiring Mike Cameron, who became expendable after the Mets signed Carlos Beltran to play CF.
There's one thing about Billy Beane: once he decides he likes a guy, he never seems to give up trying to get him. (See: Erubiel Durazo, Kirk Saarloos, Jack Cust.) The A's tried very hard to sign Cameron as a free agent last year, so we know Cameron has the official Billy Beane Stamp Of Approval®.
But I don't see it happening. The budget is tight, Cameron makes $7M, and he'll be injured to start the season. Plus, Mark Kotsay is good enough, isn't he?