Not nearly enough. Honestly, that's almost insulting given the player we're talking about here. The lone prospect you're offering up would pretty much have to be Marshall, and there's no way they want him without Wood or Prior coming along, too. Without a starter, you'd probably have to package Marshall, Hill and Guzman, and maybe even Ryu, too. Or hell, with the Yanks bullpen troubles, maybe Williamson. I highly doubt the Yankees are even close to shopping A-Rod, but that's not say they wouldn't trade if somebody offered them the right deal.