Antonio Brown has agreed upon a four-year, $68 million deal with the Pittsburgh Steelers. Brown is now signed through the 2021 season.

The deal averages $18.5 million over the next three seasons and $17 million over the next four.

The Steelers had promised to rework Brown's contract this offseason. They restructured his contract last August, advancing $4 million of his 2017 salary into his base salary for 2016.

Brown had one season remaining on the five-year, $42 million deal he signed with Pittsburgh in 2012.

The Pittsburgh Steelers have placed the exclusive franchise tag on Le'Veon Bell.

The Steelers and Bell would like to agree upon a long-term contract.

Antonio Brown and the Pittsburgh Steelers have made significant progress on a long-term deal.

The goal is for an agreement to be reached by March 9th.

The Steelers will also have to deal with the free agency of Le'Veon Bell this offseason.

James Harrison is looking for a two-year contract at age 38, according to agent Bill Parise.

The Pittsburgh Steelers are on record as saying they want to re-sign the veteran linebacker.

"Of course James wants to be in Pittsburgh," Parise said.

Harrison will become a free agent on March 9.

Le'Veon Bell can become an unrestricted free agent on March 9 and the Pittsburgh Steelers aren't saying whether they'll keep him from the open market.

Kevin Colbert said that tagging Bell and signing him to a long-term deal are both options, but he didn't rule out the running back testing the open waters.

"The tag is always an option, and it's something we'll use if necessary," Colbert said. "We have until March 1 to make the decision. Again, this thing is very fluid. It changes daily, once you start into talks with players and start to see how it's all going to fit. We know that's an option. Even if we were to use the tag on Le'Veon, we would certainly want to do something long-term and have him be a member of the Steelers for life."

The Steelers have more than $35 million in cap space.

Kevin Colbert said the Pittsburgh Steelers have made it a priority to extend the contract of Antonio Brown as soon as possible and are already in negotiations.

Brown has one year remaining on a five-year, $42 million deal and the Steelers have already had active discussions with his agent, Drew Rosenhaus, who was in Pittsburgh last week.

“I can say unequivocally we want Antonio Brown to retire as a Steeler, just as we want Le’Veon Bell to retire as a Steeler,” Colbert said.

Bell is an unrestricted free agent and will likely receive the franchise tag.

Antonio Brown acknowledges that he plans to make changes in light of the Facebook Live incident after Pittsburgh's playoff win in Kansas City.

"The big thing I learned is that I have some growing up to do, and I'm going to do it," Brown told the website while making the media rounds at the Super Bowl in Houston. "I learned a lot from it and will keep learning. I'm going to rebuild the trust with my teammates and coaches. I promise you that."

Brown called the incident a "dumb mistake" during the interview. 

Brown struck a contrite chord shortly before the AFC title game against New England, apologizing for the distraction and owning up to his mistake in a news conference. The video caught Tomlin telling his Steelers they "spotted these a--h---- [the Patriots] a day and a half" in game prep.