McClain was drafted by the Raiders in 2010 with the No. 8 overall selection but spent just three tumultuous seasons with Oakland after being believed to be the next-great linebacker.
McClain was released by the Raiders and signed by the Baltimore Ravens before retiring and now being traded to the Cowboys.
The move could make for an interesting couple of days in Oxnard, Calif. when the Raiders and Cowboys are scheduled to practice together on Aug. 12 and 13.
Granted, this will mean that McClain will have to follow through with his latest "comeback" and remain on the roster until then.
Nonetheless, it appears this saga hasn't come to a complete end.