There's no doubt the New York Yankees has had some pretty good prospects over the years: Mariano Rivera, Andy Pettitte, Jorge Posada, and Derek Jeter. These days' prospects are Jesus Montero, Francisco Cervelli, Austin Jackson (who left via trade), and Phil Hughes.
Austin Jackson was supposed to be the starting center-fielder, but Brian Cashman traded him for Curtis Granderson, who is now injured. Jackson is thriving as the leadoff guy as a Detroit Tiger.
Brian Cashman kept all four players as they were coming up with the Core Four.
This time around, will he stick around with Cervelli, Montero, and Hughes until they reach their prime years?
Hopefully, as these three faces are the future key to this organization (next to big free agent signings).
Francisco Cervelli will replace Jorge Posada, as Cervelli is an extremely talented catcher who not only can hit, but can call games and has a pretty decent arm. And considering the fact the Sabathia is going to stick around in New York for a while, Cervelli is the good option to go to, as when he is catching for Sabathia, they allow an average less than three runs.
And to answer your question, no, I did not forget about Jesus Montero. I do not think he will be a full-time catcher, and might switch positions such as the outfield or first base. Let's face it, Montero isn't the greatest defender: he hasn't even worked with a Major League pitcher yet! It's his hitting skills that brightens his future.
The ace for the starting rotation of the future New York Yankees is Phil Hughes. It took one short season with five wins, the unsuccessful second season of his career, and another season in the bullpen to get where he is now: a dominant looking 23-year-old right-handed pitcher.
As of May 13, 2010, he is 5-0 with and ERA of 1.38. He doesn't seem to be one of those pitchers that have good and bad months, which leads to inconsistency.
Francisco Cervelli and Phil Hughes is the future Jorge Posada and CC Sabathia.