Ian Rapoport reports that the expectation right now is that Cotchery will miss 4-6 weeks with this injury.
This is hardly the type of news the Panthers want to hear, after they lost their No. 1 receiver Kelvin Benjamin for the season with a torn ACL.
It would not be surprising to see the Panthers bring in some receivers for tryouts in the coming days.
Cotchery, 33, is in the second year of his five-year, $8.015 million contract that included a $2.25 million signing bonus. He stands to make a base salary of $1.45 million for the 2015 season.
This season, Cotchery has caught five passes for 56 yards receiving and one touchdown over the course of two games.