According the local Kanagawa news website Kanaloco.jp, the Yokohama BayStars are working on adding three additions to their foreign roster.
Negotiations with Bootcheck and Castillo are in final stages, and while negotiations with Sledge haven't started yet, Yokohama appears to be the favorite to land him.
Whoever Yokohama winds up with will join Stephen Randolph on the roster next season.