As we say in the South, the Panthers have a tough row to hoe with regards to its offensive line this offseason. With the retirement of center Ryan Kalil four of the five offensive line positions could have a new starter in 2019. I see Trai Turner returning at right guard as a lock. It gets a lot less certain from there.
Certainly Taylor Moton will land at one of the tackle positions, preferably left tackle. That would allow Darryl Williams to slide back in at right tackle once he is healthy.