After a successful regular season, which included an NFC East title, it seemed as if the Dallas Cowboys were on their way to a solid postseason performance. However, the San Francisco 49ers earned a huge upset win in the Wild Card round to end the Cowboy’s playoff hopes, 23-17. After going 12-5 throughout the regular season, Dallas enters the offseason looking to strengthen their defense. Make sure to check out all of our other NFL Offseason Previews. Pending Free Agents The Cowboys get to free agency coming off a disappointing playoff performance. According to Over the Cap, the Cowboys have a…