Jon-Eric Sullivan is about to make the same OT mistake Chris Grier did

NFL Miami Dolphins tackle Austin Jackson | Jasen Vinlove-Imagn ImagesThe Miami Dolphins have a lot of roster moves they would like to make, but they can't do all of them without leaving themselves completely void of spendable cap space. There is only so much dead money they can eat.

At the center of many discussions is left tackle Austin Jackson. Jackson has become a leader in the locker room over the years. That's good because he spends more time there than he does on the field. When Jackson is healthy, he is a good offensive lineman, but as we have said many times before, he isn't healthy very often.

Jon-Eric Sullivan could take another big cap hit by releasing him, and he still might, but…