Paul Sullivan at the Tribune has some thoughts, including the usual names Sandberg, Girardi and Brenly.
He also mentions the names Joe Torre (likely too old at 70) and Alan Trammell (seems like more of an organizational, bench coach type) as possibilities.
Sandberg, who has managed the last four years in the Cubs’ farm system, would be the fan favorite, and by all reports has worked hard and worked his way up from the lowest levels of managing, something unprecedented for a Hall of Fame player.