-- ALLEN PARK, Mich. -- The NFL is looking into a potential fine or discipline for Detroit Lions center Dominic Raiola's stepping on the ankle of Chicago Bears defensive lineman Ego Ferguson on Sunday.
"The matter will be reviewed and appropriate discipline will be applied for any potential safety-related rules violations," NFL spokesman Michael Signora said in an email Monday.
Lions coach Jim Caldwell said Monday that Raiola is being interviewed by the league and that it's a "possibility" the Lions won't have him for their regular-season finale.
Raiola was seen on video stepping on Ferguson's ankle during the third quarter of the Lions' 20-14 win over Chicago. After the game, Raiola said it was unintentional and it happened as he was stumbling out of a scrum following a play.
"I apologized at the end of the game, told him it was unintentional and we shook hands and that was it," Raiola said.
He had said the same thing to one of his friends, Chicago offensive lineman Roberto Garza, and wanted it relayed again that he didn't intentionally step on Ferguson's ankle. Ferguson, a rookie out of LSU, was injured on the play but returned to the game.
On Sunday, Ferguson did not want to get into what Raiola said to him after the game.
"None of that matters," Ferguson said. "We all saw the play. You can't take back what happened with that play. That's the end of that."
Raiola was fined $10,000 earlier this season for unnecessary roughness when he clubbed New England defensive lineman Zach Moore in the back of the head.