CLEVELAND — Cleveland Browns running back Jamal Lewis hasn’t ruled out a return to the NFL, even though he is still suffering from headaches and blurred vision as a result of a concussion that ended his season.

Lewis says he must first receive clearance from doctors before contemplating a return. There is no timeline for when he could — or even would — be cleared.

“It’s sort of a yes, no, maybe so,” Lewis said. “After I get finished doing what I have to do with the concussion process and get everything straight on top, then I can make a solid decision.”

Lewis’ season ended Dec. 2 when he was placed on injured reserve with post-concussion symptoms, but he revealed Sunday that he actually sustained the concussion in the season opener against Minnesota and tried to play through it.