After waiving C.J. Anderson earlier today, the Panthers decided to add some backfield help by signing veteran Travaris Cadet, a source told Jourdan Rodrigue of the Charlotte Observer (Twitter link). 
Christian McCaffrey has completely monopolized the backfield touches for the Panthers, so there wasn’t much of a need for Anderson anymore. The moves today signal that the team has complete confidence in McCaffrey, and will continue feeding him a large volume of touches. Anderson had reportedly been expecting a larger role, so the team released him when he wasn’t getting much playing time. There will be no such expectation from Cadet, and he should slide in immediately as the number two.
Cameron Artis-Payne was the only running back left behind McCaffrey after the waiving of Anderson, so it makes sense why they’d be looking for help. Cadet spent the first five seasons of his career with the Saints, before latching on with the Bills in 2017. The Bills released him at final cuts this year, and he recently worked out for the Raiders.
Cadet is more of a passing-downs back than a between the tackles runner, and he had a couple of productive seasons catching the ball in New Orleans. In 2016 he caught 40 passes for 281 yards and four touchdowns, and also contributes on special teams.