Getty This trade pitch sends a star Seattle Seahawks running back to the Dallas Cowboys to finally get them some veteran support. When it comes to positions that the Dallas Cowboys need to beef up, running back is often the first thing that pops up in conversation. The Cowboys could certainly use a veteran in this position, and it’s suffice to say that Dallas’ offense would be greatly improved by adding a longstanding running back, looking at their depth chart . Jerry Jones hasn’t seemed too