While there have been plenty of MLB trade rumors this offseason involving top prospects Archie Bradley and Taijuan Walker, there's just one big problem: Neither pitcher is actually available.
Arizona Diamondbacks general manager Kevin Towers expressed to Steve Gilbert of MLB.com that "it would be very, very tough" to part with Bradley. Meanwhile, Seattle Mariners GM Jack Zduriencik explained to Greg Johns of MLB.com that the club has no "intentions" of dealing Walker.
Those decisions make perfect sense considering the tremendous upside that each of those pitchers possesses. The following list consists of a few top prospects who will be slightly easier to obtain than Bradley and Walker, but who will still be incredibly difficult to pry away from their respective clubs.