The Hottest Girls of Cheerleading has a whole post of Cheerleaders with Backside Potential. I’m pretty sure that some of those aren’t technically real cheerleaders, but I’m sure you can overlook that pretty easily.
Bonus: The Best View via SaltyMilk (probably NSFW, but full of backside potential)
Not a Panthers fan (too many years in Central Florida cheering on the Bucs), but I might have to make the drive to Charlotte for some games…