Can Ivan Nova be part of the answer?

Ivan Nova is likely going to be a key part of New York's rotation in 2011. Getty Images

For much of the offseason, Plans A, B and C for the New York Yankees' rotation appeared to be Cliff Lee; he's now a member of the Philadelphia Phillies.

For the Bombers, then, the plan seems to be CC Sabathia, Phil Hughes, A.J. Burnett, and ...

... what are the options and how do they compare with likely-to-retire Andy Pettitte?