Here is a scouting report from ESPN's the Scouts...
Insider Analysis Greenwood has improved his recognition skills, he doesn't take as many false steps as he did earlier in his career and the numbers of tackles he has made has steadily increased over the past three seasons. He takes good angles to the ball, he has the range to make plays from sideline-to-sideline and he excels in pursuit. He can change directions quickly, he show good burst out of his cuts and he has the man-to-man cover skills to stay with most backs as well as tight ends. He doesn't have great lower body strength and blockers will have some success driving him back when he doesn't play with good leverage. Greenwood doesn't uses his hands well, he lacks the upper body strength to maintain separation from blockers and he takes too long to shed the block once he's reached. Overall, he is a good starter that gives good effort on every snap.
'04 Team Miami Dolphins
Exp. 4 Years
They grade him as the 6th highest LB free agent prospect this season behind Julian Peterson, Jerimiah Trotter, Kendrell Bell, Edgerton Hartwell, and Ian Gold. He sounds like he would be an upgrade over Foreman and would definatly start for us.