The St.Louis Rams traded DE Hall Davis to the Washington Redskins for rookie TE/FB Dennis Morris. But the trade was actually structured like this: Rams send Davis to Washington in exchange for a conditional draft pick; and Washington sends Morris to St.Louis in exchange for a conditional draft pick. Meaning if one of the players exceeds expectations, then their former team will get better compensation (the "conditional draft pick" is determined by the players' performance).
This is likely bad news for the Rams FB Mike Karney. Karney was a pro-bowl full-back for the New Orleans Saints, but was cut by New Orleans during the 2009 off-season; he was then signed by the Rams. Karney has not been very dependable for the Rams. He was slowed down by injury during the 2009 season, but he was a poor lead-blocker when he was playing. Karney also had trouble catching the ball.