According to Rapoport, Waynes still has a chance to return before the end of the season.
Waynes was reportedly seeking a second opinion on a pectoral injury, with the initial fear being he could be out two months.
The Bengals could end up placing him on injured reserve to open the regular season.
Waynes was one of Cincinnati’s biggest free-agent additions this offseason, so not having him until October would be a major blow to the defense.
Waynes, 27, is a former first-round pick out of Michigan State by the Vikings in the 2015 NFL Draft. He was entering the final year of his four-year, $12.944 million rookie contract when the Vikings picked up his fifth-year option.
Waynes made a base salary of $9,069,000 for the 2019 season under his fifth-year option and was testing the open market as an unrestricted free agent for the first time in his NFL career when he signed a three-year, $42 million deal with the Bengals.
In 2019, Waynes appeared in 14 games for the Vikings and recorded 58 tackles, one interception, two forced fumbles, a recovery and eight pass defenses.