Along with Edwards, rookie offensive lineman Zack Williams has a torn anterior cruciate ligament. He is expected to have surgery and miss the season
Both injuries occurred during Thursday's practice.
Carolina spokesman Charlie Dayton said Friday that coach Ron Rivera will address the injuries after the team's FanFest at Bank of America Stadium in Charlotte, N.C., on Saturday.
Williams was a sixth-round draft pick this spring from Washington State.
The Associated Press contributed to this report.