Of course you can trade them later. That wasn't the point though. If you feel someone like Anderson is going to regress from what they're doing this year, why wouldn't you sell high on him and get back more now than have him for a couple of years pitching worse and then trade him for less than you could've gotten? If our guys are that good at predicting the future, then we should always be able to grab guys off the scrap heap who will perform like stars. However, it's really difficult to predict that sort of thing. Anderson probably isn't an ace, but everyone knows that, and we aren't going to be able to convince a MLB GM that he is, so the thought that he has immense value now that will go away after next season probably isn't realistic. If it is, and someone offers us an unbelievable deal, then go ahead and trade him. In the likely scenario that we wouldn't get that "king's ransom," then he is probably most valuable to us as a member of our rotation in 2018, looking to trade him when some of the next prospects are ready to step in. I was looking at Nelson, Anderson and Davies as the three "vets," with Woodruff and Hader as the guys who are ready to step in next year to fill out the rotation. We then have a lot of prospects who could be ready in the coming years, and as they push there way onto the MLB roster, they can allow us to trade guys like Nelson, Anderson and Davies as their "team control" starts to run out.