NEW ORLEANS — All four players punished in the NFL’s bounty investigation have filed appeals with the league. People familiar with the situation say the players have asked Commissioner Roger Goodell to remove himself as arbitrator because they do not believe he can be impartial.

One of the people also says New Orleans linebacker Jonathan Vilma expects to play at Tampa Bay on Oct. 21 while his appeal is pending. The people spoke to The Associated Press Friday on condition of anonymity because the appeals were filed as private documents with the league.

The NFL confirmed Friday that all four players had filed appeals, but said the league would decline comment on the substance.

This marks the second round of appeals by the players.

About a month ago, a three-member appeal panel created by the NFL’s collective bargaining agreement vacated initial disciplinary rulings handed down by Goodell.