The NFL said Thursday it will investigate whether the Oakland Raiders violated the “Rooney Rule” when they hired Jon Gruden as coach.

The Fritz Pollard Alliance called for the investigation Wednesday out of concern that Raiders owner Mark Davis came to an agreement with Gruden before the team interviewed any minority candidates as required by the NFL since 2003.

NFL spokesman Brian McCarthy said that the NFL will “look into this.”

Fritz Pollard was the first black coach in the NFL, guiding the Akron Pros in 1920-1921. The alliance is dedicated to promoting diversity and equality of job opportunity in the coaching, front office and scouting staffs of NFL teams.

Davis said Tuesday at the news conference introducing Gruden as the team’s new coach that he had been trying to make the move for six years.

The team officially hired Gruden on Jan. 6. Davis said he wouldn’t have fired coach Jack Del Rio if he didn’t believe Gruden would sign.

Bengals greet Austin

The Cincinnati Bengals introduced Teryl Austin as defensive coordinator Thursday.

“We wanted to stay within our structure,” coach Marvin Lewis said. “With the personnel we have returning, we didn’t have to make drastic changes. We didn’t want the players to have to re-learn the wheel.”

Austin, 52, spent the past four seasons as Detroit’s defensive coordinator, but his future was in doubt after the Lions fired coach Jim Caldwell last week. He inherits a defense that was 18th in the NFL in total defense and produced 14 takeaways this past season.

“It’s more about the players than us,” said Austin, who replaces Paul Guenther. “We wanted to keep things similar, terminology-wise. We’ll make some changes, but nothing drastic.”

Football in London

The NFL is heading to a new destination in London, and the first match-up at English Premier League club Tottenham will be the Oakland Raiders against the Seattle Sea­hawks in October.

That’s if the 60,000-plus capacity stadium, which has been designed to accommodate soccer and NFL, is completed in time for Week 6.

While Tottenham is sure that building work is on schedule on the White Hart Lane site where its previous stadium was razed last year, the NFL has contingency plans to move the Oct. 14 game to Wembley Stadium.

The home of the England national soccer team is where the NFL will be staging another two games after the Raiders-Seahawks match-up, giving London three consecutive weeks of American football for the first time.

The Philadelphia Eagles will play the Jacksonville Jaguars, and the Tennessee Titans will take on the Los Angeles Chargers. The NFL is yet to decide which game will be Oct. 21 in Week 7 and which slots into Week 8 on Oct. 28.

Norv Turner up for job

The Carolina Panthers interviewed Norv Turner for the vacant offensive coordinator position.

The Panthers fired offensive coordinator Mike Shula and quarterbacks coach Ken Dorsey on Tuesday, two days after a playoff loss to the Saints.

If Turner, 65, is hired, he’s expected to bring in his son Scott as quarterbacks coach. Scott Turner is an offensive analyst at the University of Michigan and previously worked for the Panthers as an offensive quality control coordinator from 2011-12.