"They're still knocking away at it," Kiffin said.
JaMarcus Russell is the lone remaining holdout in the draft. Oakland had hoped to have the 6-foot-5, 265-pounder in training camp but when talks stalled, the Raiders went out and signed veteran Daunte Culpepper.
If and when Russell does sign, it would give Oakland four quarterbacks on its roster. Kiffin was asked if he would be inclined to take all four into the regular season, a rarity for NFL teams.
"We're going to go with what we have right now," Kiffin said. "I've got to get this team ready to play and I've got to get this team ready to beat Detroit with who we have."
Notes: Defensive back Stanford Routt returned to practice on Wednesday after missing the final week of training camp with a leg injury. There's no word on whether Routt will play against the St. Louis Rams on Friday.