PHILADELPHIA, Pa. -

All-pro linebacker Kevin Greene is serving as a guest assistant coach at Eagles camp over the next few days. He is one of the greatest pass rushers to ever play the game.

Greene spent 15 years in the pros and ranks third among all-time career sack leaders with 160.

Green was a monster out of the 3-4. Eagles' first round pick Marcus Smith has already caught his eye. That is high praise for Smith, who is only in his first NFL camp.

The Eagles will travel to Chicago to play their preseason opener Friday night.