If the Panthers could convert one offensive lineman to a skill position, they should put offensive tackle Taylor Moton in the H-back role.
The Panthers already use Moton as the extra tight end in the ‘jumbo package’ from time to time, so he already has semi-experience playing a skill position. If it were up to me, the Panthers would use him as the H-back in goal-to-go situations, similar to how they’ve used guys like Richie Brockel in the past.
Moton is 6’5” and weighs 320 lbs. At the NFL Combine, he ran a 5.