Whitlock, Mayer, Casas and Bleis for Soto?
Pass.
This move would make sense if the Sox were on the verge of a title and needed a push over the edge. This current Sox team needs young guys to provide and influx of talent. Trading them away would ruin everything that Bloom tried to build.
Just wait for Soto to become a FA, sign him and add him to that grouping of players who will be cheap AF on your payroll.