Thing is the only area in the minor leagues that doesn't have significant strength is high ceiling starting pitchers in the upper minors. And no one is going to trade them, so you're going to end up with other younger OF prospects and younger IF prospects, which we have tons of already. Or you could get pitchers but younger, so of course a lot more risk and many here would say that's not enough to get back for him. I admit I'm nowhere near the minors expert as many here so take with a grain of salt, but that would be my general look at trading a guy like Santana now. Plus Thames is older and only signed for 2 years after this, Santana seems like a prime candidate to move 1B down the line to take over there later on. Heck, maybe you'd be better off selling high on Thames.