Some interesting writing on Cobb and Matthews:
http://www.jsonline.com/story/sports/nfl/packers/dougherty/2017/01/25/dougherty-tough-roster-calls-loom-packers/97039672/
"Matthews ($11.1 million) and Cobb ($9.5 million) are paid like stars. They have the second- and third-highest salaries on the Packers’ roster in 2017, so they have to produce big. But after the last two seasons, there’s good reason to question whether they’ll provide enough bang for that buck."
"With Matthews, the solution is another position change. He wants to play outside linebacker, but he’ll be 31 in May. His injuries keep accumulating — he needs shoulder surgery this offseason — and his pass rush skills are starting to decline (11½ sacks in his last 28 games).
So move him back inside. That’s where he helps this team most at this point in his career. Then draft a pass rusher high.
Cobb, though he can play any receiver position, he’s best in the slot. But as we saw this season, so is Jordy Nelson post-ACL surgery. And Nelson is better because he’s so much bigger (6-3).
So if I’m the Packers, I’m asking Cobb to cut his salary about in half, with the chance to earn back much of the money with a big season. To broach that, though, you have to be willing to cut him if he says no."