Starting pitching options for Red Sox

It has become clear that the Red Sox plan on bringing in a veteran arm to round out the rotation that currently has locks Josh Beckett, Lon Jester, Daisuke Matsuzaka and Tim Wakefield in it.

With CC Sabathia, AJ Burnett and (likely) Derek Lowe out of the equation, who could the Sox bring in?

Evan Brunell runs through four main options: Kenshin Kawakami, Ben Sheets, Brad Penny and John Smoltz… then offers up some other pitchers who could head to Beantown.