Carolina center Ryan Kalil wasn’t about to sugarcoat it on Tuesday when he talked about replacing his friend and long-time Panthers offensive tackle Jordan Gross.

Left tackle is a tough position, Kalil said, and despite being a Pro Bowl center, he doesn’t think he could play there.

There’s one name off the list of potential left tackles for the Panthers, who had their second day of offseason workouts on Tuesday. Kalil, who at 29 is the most veteran offensive lineman on the roster, said he’s curious to see who takes over following Gross’ retirement in January.

Among the candidates already on the Panthers roster are right tackle Byron Bell, guard/tackle Garry Williams and versatile lineman Nate Chandler. Panthers coach Ron Rivera has indicated Bell will get the first shot at the position.

“That’s a different transition from right to left,” Kalil said. “Do I think he’s capable? Yeah, I do. I think Byron’s gotten better with every year.

“But time will tell. That’s a different position and it’s hard to replace a guy like Jordan. I think he’s one of the best tackles in the league. And so those are tough shoes to fill.”

Bell is naturally left-handed, so the coaching staff believes the transition could work for Bell. But he was ranked 52nd among 76 tackles in 2013 by Pro Football Focus, and his footwork may not be good enough for the position.

Chandler, a 6-foot-4, 315-pounder, is another in-house option. He has added some muscle this offseason to compete for the tackle job, Kalil said.

A tight end at UCLA, Chandler played on the defensive line as a rookie and last season converted to offensive guard. He’s the most athletic offensive lineman on the roster, but he’s never started at tackle in the NFL.