BUFFALO, N.Y. (AP) — The Buffalo Bills top pass rusher Aaron Schobel will miss at least another two weeks and could potentially be out for the rest of the season with a left foot injury.

The two-time Pro Bowl defensive end is to meet with a specialist in North Carolina on Wednesday to have his foot examined, a person familiar with the injury told The Associated Press on Tuesday. There is concern that Schobel sustained a more serious injury in the mid-foot area where a cluster of bones forms a small arch between the ankle and toes, known as a Lisfranc injury. It is the type of injury that ended Indianapolis Colts defensive end Dwight Freeney's season last November, the person said.

The person spoke on condition of anonymity because the Bills have not released the nature or severity of the injury.

Depending on what the tests show, Schobel could miss as few as two weeks, the person said. Schobel has already missed three games since aggravating the injury during a 41-17 loss at Arizona on Oct. 5. He was initially hurt a week earlier during a 31-14 win at St. Louis.

"We won't comment on the specifics of a player's injury," Bills spokesman Scott Berchtold said in an e-mail to the AP.

The Bills (5-3) return to practice Wednesday to pre
five touchdowns and two interceptions in the past four games.

Schobel managed just one sack before he was hurt but had been among the team leaders with 32 tackles. Selected by Buffalo in the second round of the 2001 draft, Schobel ranks second on the team with 68 career sacks