Financial terms of the deal weren't immediately available. ESPN, citing sources, reported the deal includes $22.5 million in guaranteed money and is worth $36.5 million overall.
Hurney calls Stewart a "playmaker who came make a difference in games" and that "we have seen the impact he and DeAngelo Williams have had on our team."
The move came before the Panthers opened the preseason Saturday night with a 26-13 loss to the Houston Texans.
Along with rushing for 761 yards and four touchdowns last season, Stewart also caught 47 passes for 413 yards receiving with three scores. He served extensively as the team's third-down back last season.
Stewart has run for 26 touchdowns in his four seasons.
Miami Dolphins receiver Chad Johnson was arrested Saturday in Davie, Fla., on a domestic violence charge, accused of head-butting his newlywed wife during an argument in front of their home outside Miami. Johnson and his wife, Evelyn Lozada, were at dinner and she confronted him about a receipt she had found for a box of condoms, said Davie police Capt. Dale Engle. The argument got heated and continued on the drive home, he said.
When they arrived in their driveway, the 34-year-old Johnson head-butted Lozada, she told police. Lozada was treated at a hospital for a cut to her forehead, Engle said.
Johnson, who changed his last name back to Johnson from Ochocinco after his July 4 wedding to Lozada, was being held Saturday night in Broward County Jail where he will remain until he can appear before a judge, which Engle says might not be until Monday.
Around the league
Bears • Chicago signed linebackers Xavier Adibi and K.C. Asiodu. Adibi has appeared in 38 games with eight starts over four seasons with Houston and Minnesota. Asiodu has appeared in 11 contests over two seasons with St. Louis (2009) and New Orleans (2010). He spent part of the 2011 preseason with Green Bay but was released before the regular season.
Cardinals • Arizona signed fullback Reagan Maui'a and released guard Chris Stewart. Maui'a, 6-foot and 265 pounds, played in three games last season for the Cardinals after appearing in 15 games and making four starts in 2010.
Texans 26, Panthers 13 • In Charlotte, N.C., Matt Schaub led one scoring drive and threw an interception in his first action since breaking his right foot last season, and Houston beat Carolina. Schaub completed three passes for 52 yards on Houston's opening drive, including a 22-yard strike on third down the seam to Owen Daniels to set up a field goal.
Seahawks 27, Titans 17 • In Seattle, Tennessee QB Matt Hasselbeck threw a pair of interceptions in his return to the Pacific Northwest, while Seattle rookie Russell Wilson dazzled with touchdowns running and throwing in the second half.
• Houston 26,Carolina 13
• Seattle 27, Tennessee 17
• St. Louis at Indianapolis, 11:30 a.m.
• Dallas at Oakland,6 p.m.