If there was a team willing to pay Boras what he wanted for Fielder then he would be signed by now. Every day he remains a free agent his market drops a little more. Fielder shouldn't be waiting on Darvish or Cespedes to sign. Fielder should be the plan A, not the plan B, but all the big money teams have first basemen. This was a bad year for Fielder to be a free agent because he was going to be overshadowed by Pujols and the thought was the teams that missed out on Pujols would go after Fielder. It appears the Marlins don't view Fielder as much of an upgrade over Sanchez as they did Pujols, and the Cardinals went out and got Beltran and are shifting Berkman to first. A few years ago the Mets or Dodgers would have been a near perfect fit ready to jump in with big money, but everyone knows the situations those teams are in.
The Giants and Brewers make all the baseball sense in the world but so far are unwilling to jump into the bidding. Of course so is every other team at this point. There hasn't even been a rumor of an offer being on the table from the Orioles or Mariners who are the two teams reported to have the most interest. The Prince Fielder market is going to fall into someone's lap. Perhaps it falls back to the price the Brewers were willing to go before last season or maybe it falls to the Nationals.
At this point it is anyone's guess, but as long as Fielder is unsigned and his market continues to drop all 30 teams have a chance to sign him.