The problem with that, as I have noted above, is that the agent can easily call the Sox bluff on that. Wheeler is a more attractive option than Ryu (injuries, age, Boras) and Bumgarner (profiles poorly in GRF, mileage) and agents know we aren't gonna cut off our nose to spite our face. Wheeler has the leverage to force the Sox to both keep bidding against themselves and to wait as well. They know we aren't gonna shell out money for the top two choices and they know there's a sizeable gap between 3 and 4/5 and they know the fanbase is ready to tear into the club for losing out on Wheeler because of Abreu's foolhardy extension.
Wheeler's agent has Hahn's sensitive parts in a blender with his index finger on the start button. They are gonna squeeze out every dollar.