If Dice-K was a Yankee, you'd be slobbering all over him right now.
You wouldn't take a complete game 6 hit 1 run game at this point? The Yankees are paying a pitcher 28 million to go 6 and give up 3 for a few months, while the Sox are investing in a player that has 5 years and has a very high ceiling.
Think of it this way. The Sox aren't even paying Dice-K two times more then the Yanks are paying Clemens for 26 more months of pitching + post-season ball.