Hate to be the bearer of bad news but I don't think there is any way that Grimes signs a deal for $6-$8 million. As of right now he is playing like a top 5 corner in the NFL. Someone will definitely be willing to pay more than that. He will probably sign a 3 year deal anywhere from $8-10 million per year with $14-18 million guaranteed. Even at 30 he is a rare talent in the NFL and people will pay for that. One thing is for sure is that he will be a Fin next year. They tagged Soliai for over $12 million/year when they had the cap space and I see Grimes in the same boat.
You may be correct they may have to tag him..the tag was like $11 in 2013 for a corner. If the per year price gets to high I don't think (Ireland if still here) would agree to that type of a 3yr deal for 30 year old player. (maybe tops about $8m a year?). Would hope we could keep the tag open for one of DL players if needed.