Getty Alex Highsmith #56 of the Pittsburgh Steelers is a potential Dallas Cowboys trade target. The Dallas Cowboys are heading into NFL draft week determined to finish a job they started last month with the trade for   Rashan Gary  and the signings of multiple defensive backs, highlighted by the addition of Jalen Thompson . Dallas has done much to address the backline of the defense, but now they’ll need to do more adding up front and in the middle to have a shot a fixing what was a league-