It's not either or though. The Bears can re-sign Briggs AND keep Tommie Harris. And what 4th-6th round pick has replaced an All-Pro and got close to the same production? Not saying it can't happen, but I think it takes a lot more talent than what you are giving and it definitely takes a similar caliber player in order to uphold one of the best defenses in the league. They can probably keep both of those players, but at some point some of those key players will have to be released. It will be hard to sign Briggs to a large contract, Harris to a large contract, Grossman or another QB to a large contract, and Benson to a large contract-and even if you get those 4, you probably lose practically everybody else. There are more examples than this of the Cover 2 and replacing weak-side linebackers, but let me go to the Colts here for an example. Mike Peterson-2nd round pick-2002 in the cover 2 system at weak side linebacker-137 tackles including 113 solos, 9 PD, and 3 INT. David Thornton-5th round pick in 2002-entered the lineup at weak-side in 2003, had 145 tackles including 112 solos, 2 INT, 5 PD Thornton was so good in 2003 that the coaches decided not to waste him at the easy weak-side position, so they promoted him to strong side. Cato June-6th round pick in 2003-entered in 2004, 110 tackles including 84 solos, 2 INT, 9 PD-better numbers at weak-side then Thornton had at strong-side that same year, and that continued in 2005. Thornton's numbers went up when he got out of Indy in 2006. June made the Pro Bowl in 2005 with 103 tackles, 5 INT, 2 TD, and 7 PD. In 2006, June had 142 tackles, 3 INT, 2 FF, 4 PD, and 1 sack. The Colts plan to replace June with Freddy Keiaho, a late 3rd round pick that is 1 year into the league. The Cover 2 inflates the numbers of the weak-side linebacker and deflates the numbers of the strong-side linebacker. Weak-side linebackers drafted in the middle rounds can usually enter the lineup after a year and be almost as good as the high-priced player they are replacing.