File- In this June 17, 2014, file photo, New York Jets head coach Rex Ryan listens to a question during a news conference after a workout at NFL football minicamp in Florham Park, N.J. A person familiar with discussions tells The Associated Press that Ryan has agreed to coach the Buffalo Bills. The person said the agreement was reached Sunday, Jan. 11, 2015, after the Bills extended the offer to the former Jets coach and he accepted.

BUFFALO, N.Y. — Rex Ryan is switching teams — not divisions — after reaching an agreement to coach the Buffalo Bills.

A person familiar with the talks told The Associated Press the former New York Jets coach accepted in principle the Bills’ contract offer after two days of discussions. The person spoke on the condition of anonymity because the Bills have not discussed their search to replace Doug Marrone, who stepped down abruptly Dec. 31.

The offer came a day after the Bills identified Ryan as a finalist and met with him for a second time in South Florida, where new owners Terry and Kim Pegula live. Ryan was one of 12 candidates to interview for the job since last weekend.

Ryan was chosen ahead of other notable candidates, including two-time Super Bowl winner Mike Shanahan, Cincinnati offensive coordinator Hue Jackson and former Bills backup quarterback Frank Reich, who completed his first season as San Diego’s offensive coordinator.

At the same time, a second person familiar with the talks told the AP the Bills are negotiating to hire Greg Roman as offensive coordinator. Roman, a finalist for the Bills’ coaching job, spent the past four years as the San Francisco 49ers’ offensive coordinator. Roman’s future is uncertain in San Francisco after coach Jim Harbaugh left to coach Michigan.

Roman is regarded as a good fit under Ryan, because the two share a similar run-first philosophy. The 49ers’ running attack ranked among the NFL’s top 10 in each of the past four seasons under Roman.

The Bills are coming off a 9-7 finish, matching their best record in a decade, but missed the playoffs to extend the NFL’s longest active drought to 15 years.