"I really have nothing to report on that," Raiders coach Tom Cable said. "Nothing has changed at this point."
Seymour, a five-time Pro Bowl defensive end, was acquired from the Patriots on Sunday in exchange for Oakland's first-round draft pick in 2011. The move was on the NFL's official transactions list and Seymour is on the Raiders' roster on their Web site.
Cable said he spoke with Seymour earlier this week and that the defensive lineman told him he wants to play in Oakland.
Cable reiterated that he is hopeful Seymour will play for the Raiders but declined to discuss reports the two sides were in talks on a new contract.
"I don't want to comment about anything of that until we have something that's done and concrete," Cable said.
Patriots coach Bill Belichick also refused to talk about Seymour and the trade during his daily meeting with the media.
"Because we don't have rights to Richard, there really isn't anything I can say about him or his situation," Belichick said Tuesday. "So I'll have to pass on those questions at this time."
He was more concerned with preparing the players he's still coaching for Monday night's season opener against the Buffalo Bills. But he did praise Seymour.
"There's a lot of things that Richard did well," Belichick said in his first remarks since Sunday's written statement announcing the trade for Oakland's first-round draft pick in 2011, "but that's the way it is and we're moving forward and our team's moving forward."
He refused to say whether the trade had been completed in the wake of Seymour's failure to report to the Raiders on Monday and Tuesday.
Asked if the deal was done, Belichick noted that the Patriots no longer had the rights to Seymour and said that the status of the trade was "not a topic that I'm going to address."
The NFL wouldn't talk about it either.
"Any comment at this time would have to come from the teams," league spokesman Greg Aiello said Tuesday.
"We have a lot of good leaders on our team and especially on the defensive side of the ball," Belichick said. "No doubt about it, it's different, but I think it's good."
Wilfork, in the last year of his contract, wants an extension.
Director of player personnel Nick Caserio said in a conference call that he had no comment on whether money saved from Seymour, who is scheduled to make $3.7 million in 2009, the final year of his deal, would help in negotiating with Wilfork.
Defensive coordinator Dean Pees said he was very busy preparing for the Bills game and wouldn't talk about whether Belichick had asked for his input on the trade.
"This is not going to be an interview about Richard," Pees said politely in a conference call. "It's really about Buffalo and whoever we have here" to face the Bills.
Information from The Associated Press contributed to this report.