Considered one of the most athletic players in this year's draft class, Myles Jack wasn't selected in the first round of Thursday's NFL Draft amid concerns about his knee.

Jack admitted to the New York Post on Wednesday that his injured knee might require microfracture surgery.

The former UCLA linebacker suffered a season-ending torn lateral meniscus during practice in September. He wasn't cleared for physical activities until March, five days before UCLA's pro day, where Jack worked out publicly for the first time since the injury.

Jack told the Post that the degenerative issues with his knee are there, "but it's nothing extreme."

"Down the line, possibly, I could have microfracture surgery, potentially," he said. "Who knows what will happen? Nobody knows how long anybody is going to play in this league. To play three years in this league would be above average."