Ed Werder from ESPN clarifies the safeguards the Cowboys have in place should Adam Jones be suspended by the NFL for his most recent off-the-field misbehavior:
The Cowboys sent a 2008 fourth-round pick to Tennessee and a 2009 fourth-rounder to acquire Jones this offseason. But the Titans had to give up a 2009 fifth-round selection if Jones missed any games because of a suspension.
Because in the NFL no team had ever traded for a player serving a suspension, the Cowboys made a fourth-round 2009 draft choice included in the trade conditional upon Jones being available to play the entire season if healthy.
At the time, the Cowboys were protecting themselves against the possibility Jones might not be reinstated for the beginning of the season, as well as addressing concerns that any misbehavior could result in disciplinary measures that would take him off the field.