From: Pro Football Weekly

We hear the Cardinals believe fifth-round rookie RB Tim Hightower, the team’s first 2008 rookie to sign a contract, could end up being a pretty decent player at the pro level. Hightower’s thick frame reminds some team insiders of Steven Jackson, although he’s not nearly as big or fast as the Rams’ featured back. Word is, though, that Hightower is looking at least good enough to put the roster spot of J.J. Arrington, who was arrested on a disorderly-conduct charge earlier this week, in serious jeopardy.