Any time NFL fans around the water cooler, on social media, or on popular message boards get together and talk about improving their team, one of the suggestions that inevitably comes up is “we should trade for/away that guy!”

While such ideas sound great in theory, some of those ideas could look very bad when judged through the lens of history. Every NFL team has made trades that looked great at the time, only to end up looking really bad when you take a look back.

Here’s our list of the worst trades in every NFL team’s history:

32. Arizona Cardinals – Trading for Kevin Kolb

After they watched Kurt Warner retire as the only quarterback to lead the team to a Super Bowl in franchise history, the Arizona Cardinals spent the 2010 season rotating between Derek Anderson, John Skelton and Max Hall. Rather than go through another season like that, they sent a 2nd round pick plus cornerback Dominique Rodgers-Cromartie to the Philadelphia Eagles to acquire Kevin Kolb to be the Cardinals’ quarterback of the future.

But Kolb was injured for much of his first season in Arizona, and eventually turned out to be a major flop for the Cardinals, releasing him two years after acquiring him.