Sounds like a good idea for a contest.  Name which company will step up and purchase the naming rights to what is now referred to as Wrigley Field.  Ok, I'll go first.  Looking at the larger local companies it seems to me a good match would be WALGREENS.  Headquartered in Deerfield (North Suburb) and with annual revenue of 55 billion they can definetly afford it.  They have stores in 48 states as well as Puerto Rico.

This is a company which is facing competition from CVS as well as others so it would seem to make sense to get their name exposed.

I don't think the name sounds so bad either, Walgreens Field.  

Any other predictions?