Philadelphia Eagles starting CB Asante Samuel, who suffered a knee injury during last week's victory over the visiting New York Giants, did not practice Wednesday.

It's believed Samuel suffered an MCL sprain, but it's uncertain which degree sprain he suffered. MCL sprains come in three grades (1, 2, 3, with 1 being the lowest).

Grade-1 sprains are more of a day-to-day situation, which was the indication that head coach Andy Reid gave during his Wednesday media gathering.

Should Samuel not be able to play Sunday against the host Chicago Bears, veteran CB Joselio Hanson would start.

In addition, starting DE Juqua Parker did not practice Wednesday. Parker has been dealing with a lingering hip injury for at least the last three weeks, leaving rookie DE Brandon Graham as the likely starter this Sunday against Bears. Parker left last week's game in the first half and did not return.

Elsewhere, Reid confirmed to reporters Wednesday that extending starting QB Michael Vick's contract is tied to the lack of a collective bargaining agreement for next year. Reid added the team hasn't had any contract discussions with Vick or his representative, Joel Segal.

-- Adam Caplan