Suh and Joyner are UFA after this year and I don't think the Rams have been planning to extend either one. I will say I think Suh has been good overall this year. In Peters' case it's still "well see" mode but he, again, can be moved on from if they want.
The guys you really want on this defense are Donald, Brockers, Littleton, Johnson, Robey-Coleman and Franklin-Myers and they're all locked up for 2019 and mostly beyond. Build around them and also hope that Okoronkwo and Fox can help in 2019.
