Plus anyone with a brain could see the Yankees were going to go after 2 starters, most likely 2 of CC, AJ, Lowe and Sheets. It's not like the Sox were taken by surprise when the signings happen, thus they likely had a plan.
http://weblogs.newsday.com/sports/baseball/yankees/blog/2008/12/cameroncabrera_talks_off.html
Pretty much dead. Maybe the Yankees decided they'd rather just go for Manny.
That's a good point. It really comes down to semantics on what an ace is. You could argue that every team has one ace, their best pitcher. You could also argue that some teams have two and some teams have none, and there is some specific definition.