Could go either way, but I take it as the Sox coveting a starting pitcher are looking to trade for one.
Like his other tweet, "Not able to speak to any specific targets but the quality of players the Sox have on the table speaks to the potential return," I don't take it to necessarily mean that the Sox have one of their top prospects on the table. All he says is that the potential return is proportional to the quality of the players you give in exchange. Nothing earth shattering about that! He doesn't speak to the quality of players the Sox are offering one way or the other.