Why aren't there more trades in the NFL? It's a fair question, but not an easy one to answer.
There are some obvious reasons more trades don't happen, but there also are some more complicated ones that might be overlooked by the average fan. It makes it so moves like Roy Williams being traded from Detroit to the Cowboys is more the exception than the rule.
Here are the biggest factors that keep more teams from making deals.
The salary cap. Finding a trade partner might seem simple ...