http://sports.yahoo.com/blogs/nfl-sh...223057628.html

San Francisco 49ers head coach Jim Harbaugh has been an undeniable success, taking his team to one Super Bowl and three NFC championships. But he's also a grinder who wears down his team, his fans, and most likely his own molars with unparalleled intensity.

So it's not surprising that Harbaugh and the 49ers may not be long for one another. What's surprising is that the Niners may well trade their head coach.