Dozier is a far better player than Walker. He's very consistent, 2 years younger, and has averaged 4.5 WAR per year every full year he's been in the league. I don't know what it would take to get Dozier but yes I think it's definitely going to take a top 10 organizational prospect, or at the very least, several interesting top 30 guys. They can just make him a QO and take the comp pick, so they're not going to just give him away and there will probably be a market for him if they put him on the block. The Twins already turned down DeLeon for Dozier from the Dodgers, who was around the #30 prospect in all of baseball. Granted he's now a rental so that hurts his value, but you can't just send them Gilbert Lara and call it a day. I would guess it takes a guy from the Ray/Grisham/Ponce tier of prospects to get them motivated enough to consider it. And I would guess, unless his production falls off a cliff this season, that the Lorenzo Cain deal will be a lot closer comp to Dozier's next deal than Neil Walker.