I think now is a good time to pull the trigger and trade Johnson, with Zito off the market, nobody is really left.
That would leave a rotation of Wang, Pettitte, Mussina, Igawa, and Pavano. They have guys who filled in admirably last year, like Jeff Karstens, and Phenom Philip Hughes is waiting in the wings. The top three in this rotation rivals any in the majors right now, and anyone who thinks Boston's 1-2-3 is better needs to think twice.