His agent, Brian Anderson, said Sunday that the knee injury that knocked out Thomas after only four defensive snaps in Saturday's preseason opener at the Tennessee Titans is not expected to require surgery.
That was one of two injuries coach Mike McCarthy announced after the game. The other was to fellow undrafted rookie, Rajion Neal. The running back from Tennessee also left with a knee injury after a promising start, which included a 12-yard touchdown run in the third quarter.
There was no additional injury information available about Neal on Sunday.
Thomas also played six snaps on special teams, where he was credited with one tackle. The 6-foot-1, 227-pounder from South Carolina State saw his playing time increase in training camp practices last week after making a favorable impression on the coaches.
The Packers were off on Sunday and return to work on Monday, when they will hold a closed practice.