You don't trade the players that have been performing is my only exception - regardless of price tag. For example, regardless of if we do well the rest of the season, the defense will never be a strength. So if we get good deals for Devin McCourty and Dont'a Hightower, we should take it, PROVIDED that they continue to suck. But for players that are usually good, like Gilmore, Chung, Flowers (we better pay him), White, Harmon, Brady (we aren't trading him), OLine, etc. we stick with them regardless. Players that are in the middle, such as Hogan, Rowe, Burkhead, are players I wouldn't significantly miss.