I have doubts KC would want Bradley, given they have the reigning Gold Glove CF in Michael Taylor.
If the Sox plan to let Bradley play CF, they have a LHH option in Duran for LF, and could platoon him there with 35yo free agent Andrew McCutchen (.969 OPS vs LHP last year). And if Duran struggles, maybe McCutchen gets a bit more PT.
There are other guys like Jordan Luplow and Darin Ruf who also crush LHP, but neither is FA right now...