Wang's poor end of year performance was due to losing the arm angle on his sinkerball. He didn't have a strong enough #2 pitch and had to come back with the sinkerball that didn't 'sink'.
That will be pinned on Ron Guidry.
The Yankees like the package deal of Cardinal's manager Tony LaRussa and pitching coach Dave Duncan, but Duncan has a year left on his contract.
Dave Eiland is the name I hear mentioned often as the new pitching coach. I think he's worked with the young pitchers in the past.
I don't know about Duncan, but I've never been a fan of LaRussa. Yes, he's had some success in the past -- but he's also had some disappointing results that rival what the Yankees have gone through with Torre in the last few years (those Oakland teams of the late 1980s were a perfect case in point).
In addition to that, I would never trust a guy who spent most of his career managing teams in which so many key players were involved in steroid controversies.
Dave Eiland is the name I hear mentioned often as the new pitching coach. I think he's worked with the young pitchers in the past.
As far as pitching coaches go, the legendary Leo Mazzone has just been replaced in Baltimore. Don't be surprised if he ends up in New York next season.