The terms of the deal for McClain essentially turn a low-risk deal into a no-risk deal for the Cowboys. If McClain plays 50 percent of the defensive snaps this year, the Cowboys will trade a 2015 sixth-round pick to Baltimore for a 2015 seventh-round pick.
If that doesn't end up happening but McClain is on the 53-man roster for five games or the 46-man roster for three games, Dallas will swap 2016 seventh-round selections with Baltimore if the Cowboys have a better pick. If McClain fails to make the team, the Cowboys lose nothing.