Panthers coach Ron Rivera started the week talking about taking a little off rookie running back Christian McCaffrey’s plate, and ended it by hinting at what one of those changes might look like. Rivera told reporters Friday that seldom-used running back Cameron Artis-Payne could get some offensive snaps at Tampa Bay on Sunday. And though Artis-Payne led the team in rushing during the preseason, Rivera indicated his work would likely come as a pass-blocker in place of McCaffrey. Rivera called the 5-10, 215-pound Artis-Payne “a little bit bigger guy,” and compared him to former running back/fullback Mike Tolbert, who signed with Buffalo during the offseason after Carolina cut him. “There’s some really good things that Cap has done this week,” said Rivera, referring to Artis-Payne by his nickname. “So if the right situation comes in, Cameron Artis-Payne may get some opportunities.” Artis-Payne, a third-year back from Auburn, has been active the past four games but has been used exclusively on special teams.