Hill will be placed on injured reserve in the coming days and start the process of coming back for 2021.
Hill is scheduled for an MRI on Tuesday morning to confirm the diagnosis, which would likely end his 2020 season and land him on injured reserve.
Hill would be the latest Cowboys starter to be out for the year as Dallas has suffered injury after injury to key starters.
Hill, 22, was drafted by the Cowboys in the second round out of Central Florida in 2019. He’s in the second year of a four-year, $4.878 million contract.
In 2020, Hill appeared in five games for the Cowboys and recorded 11 total tackles, including one for a loss, and no sacks. Pro Football Focus rated Hill as the No. 118 interior defender out of 118 qualifying players.