CHARLOTTE, N.C. -- Panthers wide receiver Steve Smith expects to finish his career where it began -- just like he predicted 11 years ago.

Smith, who turns 33 in May, signed a contract extension Tuesday that likely will keep him in Carolina at least through 2015 and likely for the remainder of his career.

A person familiar with the deal told the Associated Press that Smith will earn approximately $18 million in guaranteed money over the next three seasons. There also is a club option for the 2016 season. The person spoke on condition of anonymity because the terms of the deal have not been announced.

During a press conference Tuesday, Smith said the opportunity to retire as a Panther would be "extremely special." He also said it cements the promise he made to general manager Marty Hurney in 2001 prior to signing his first contract.

"I told Marty I would be the best Panther player ever to put on a uniform," Smith said.

Although Smith later qualified that remark by saying he believes former linebacker Sam Mills is the best Carolina player ever, it's hard to argue that Smith hasn't been the most productive.

Smith has caught 699 passes during his career for 10,278 yards with 59 touchdown receptions and holds almost every receiving record in team history. He also has six returns for touchdowns -- four on punts and two on kickoffs.

Last season, he caught 79 passes for 1,394 yards with seven touchdowns playing under new offensive coordinator Rob Chudzinski in a pass-first offense. Smith went to the Pro Bowl along with rookie quarterback Cam Newton.

"Steve has been a difference maker at receiver for us since he's been here," Hurney said. "It's always good to keep your core players. We felt like Steve made it very clear that he wanted to finish his career as a Panther. We're glad he did."

Smith ranks 32nd all-time in NFL history in receiving yards and is coming off his fifth Pro Bowl season. He's spent all 11 seasons with the Panthers after being selected in the third round out of Utah in 2001.

Hurney acknowledged Smith's age is a concern, but he feels like the veteran will continue to prove he's still a valuable player.

"There aren't a lot of receivers who play up into their upper 30s but if anyone can do it, it's Steve," Hurney said. "His work ethic and his desire and his competitiveness are what set him apart from everyone else. He knows he's getting older. But he works so hard to keep himself in top condition. He knows with every year he has to work harder and harder. He's just so competitive."

Smith said he's still got something left in the tank.