Regardless of who his agent is, it's still his choice on what he wants to do. I think if the Sox want to lock up him to a 4-5 year deal, they need to do it now, after he had his injury spell last year and it's still fresh on his mind just how quickly your career can take a turn. Maybe he'll buy into the same idea that Pedroia, Youk, Lester, and Buch bought into.