If you are so sure Urias is an ace, this year or next, why would the Dodgers trade him for an Ace who is older, more likely to get hurt and costs them Urias and others to obtain? Why not just keep Urias? And, if you don't think Urias is and ace this year or next, then Dozier and a mid-tier prospect should be enough to get him (if you think Dozier is 2016 Dozier or close to it). You can't think he's not an ace, so trade him for one, and that he's an ace, so he costs more than Dozier and 1 prospect. IMO.