The NFL is a business, anyone who tells you that it's just a game is kidding themselves.
The NFL makes billions each year and the players make millions, I don't know of too many games where that kind of money changes hands on a yearly basis.
With that said in this business known as the NFL players change teams either through free agency or through trade.
Some times teams lose a player they'd like to keep but can't match an offer from another team when that player is a free agent.
Some times players get dealt to a team through a trade when they were quite happy with their current location.
Here is a list of five players who'd like to stay where they at (or at least say the do when there is a reporter around) but will most likely be dealt.