"Trent Richardson is traveling to Pensacola, Fla., where he will have his left knee further evaluated by Dr. James Andrews," the team said in a news release.
The Browns' first-round pick, who the team traded three late-round picks to draft with the No. 3 pick in April, had a lateral meniscus tear in his left knee repaired by Andrews on Feb. 3.
The Browns downplayed the injury Tuesday but it's possible the lingering soreness could lead to another arthroscopic surgery before he's ready to return. Richardson will not play in Cleveland's preseason opener at Detroit on Friday.