May not be getting necessarily equal value in the trade, but I needed a C, wanted draft picks, and I had 3 nearly equal HBs. Cost too much money to keep all 3, especially because the 3rd one out won't see the field, and I picked up a cheaper HB in free agency for a reason, so I had to get rid of one. The oldest one was the obvious choice as the other 2 can stay for a few more years.