Bryce Harper trade

I’m in a 12 man keep forever dynasty, 26 man rosters, 10 man minor leagues and 4 IL spots. I’ve got a pretty strong system built up (Walker Jenkins, Dylan Crews, Colson Montgomery, Brooks Lee, Max Clark, Aidan Miller, Lazaro Montes, Edgar Quero and Robby Snelling). Guy who’s got Harper available wants to trade for the future, looking at prospects. Are any of these guys worth harper in a dynasty league or should I be adding? Would love some thoughts/opinions on what’s fair value for Bryce.