I just want to say one thing that should stop all of the speculation that the New York Yankees will trade for Joe Mauer. Brian Cashman and the Yankees have made some very smart moves in the past couple of year and really since 2006. Instead of making a lot of blockbuster trades, the Yankees have instead made blockbuster free agent signings. This makes a big difference because when you make a big free agent signing all you lose is a draft pick, as where in a blockbuster trade you probably lose two or more prospects from your farm system. Since 2006, the Yankees were able to keep a majority of their top prospects in their farm system. The player leading the pack is catcher Jesus Montero.
Montero was signed in October of 2006 from Venezuela, and has been in the Yankees farm system since. Montero is in Single-A down in Tampa with the Yankees, and had a very productive 2009, hitting .337 with 17 HRs and 70 RBIs. Montero has pretty much the same body type as Mauer, both standing 6' 4" and weighing 225 pounds. The only difference is Montero bats on the right side of the plate and Mauer bats from the left (both throw with the right hand).
Montero is estimated to be ready to play in the majors in 2012, so I really can't see the Yankees going out to spend all of their money on Mauer when you have a top prospect coming in a couple of years. With the money the Yankees would save, they should go out and get John Lackey!