They had many of those non performers before signing Tanaka + Ellsbury. Kuroda pay was $16M last season, you add 3-4 million more to that AAV, voila, Lester will pitch in the Bronx next season. You really expect them to trust CC or Tanaka with TJS at any point to lead that rotation? Lester might not be enough to go to the playoff, but the Yankees never back down from making huge deals.