I wouldn't worry about whether Merrifield blocks Huira. First that is not a problem until May/June of '19 at the earliest. Second, if needed either could be traded for a good return. Merrifield would still have 3 years of control in the winter of '19-'20. I would make the Royals a one stop shop for our position player needs and get Perez too. Merrifield & Perez for Ortiz, Ray, Mederios, Ponce, Notingham & Feliciano (if needed throw in Bickford/Kirby too). As the article states use the fact that the Royals timeframe is a few years away and the fact that the Brewers have an abundance of good not great prospects to get this done.