The Dolphins appear to be shifting the style of defense the team will use, transitioning from a man scheme to a zone, and on Saturday the team added an intricate piece to that adjustment.

Miami signed former Pro Bowl cornerback Brent Grimes, one of the league’s better zone cornerbacks, to a one-year deal that could be worth as much as $5.5 million, according to ProFootballTalk.com.

The Dolphins had roughly $20 million left to spend on free agents and draft picks before the additions of Grimes, guard Lance Louis and defensive tackle Vaughn Martin. According to the web site, Grimes’ contract includes a $2.25 million signing bonus and $750,000 of the base salary is guaranteed, which means Miami has committed to pay at least $3 million to the cornerback who turns 30 in July.

Grimes, who spent all six of his seasons with the Falcons, missed all but one game last season because of an Achilles injury he suffered in the season opener. He’ll likely spend most of this summer rehabbing the tricky injury, which limits quick movements in the leg.

“It is just about getting the strength back to what you were before. I don’t have any restrictions now,” said Grimes, who was told his recovery would take 6-8 months. “I’m 100 percent confident that I’ll be healthy in no time.”

Grimes, a Pro Bowl selection in 2010, started 43 games and contributed 222 tackles, 13 interceptions, 56 pass deflections and forced one fumble. The Falcons placed the franchise tag on him last offseason, preventing Grimes from hitting the free-agent market.

Seahawks eyeing trade

The Seattle Seahawks may give Matt Flynn another chance to be a starting quarterback after all. Only this time, that chance would come in Oakland.

The Seahawks are nearing an agreement to trade their backup quarterback to the Raiders. There was no announcement nor confirmation from either team, but the NFL Network reported Seattle had agreed to draft-pick compensation.

Seattle signed Flynn, 27, a year ago when he was an unrestricted free agent, giving him a three-year contract and an opportunity to compete for the starting job. Russell Wilson won that job, though, putting Flynn back in the position he has been for much of his career: backup. Flynn spent four seasons behind Aaron Rodgers in Green Bay. Flynn twice started in place of an injured Rodgers, throwing for 731 yards and nine touchdowns.

Bills, Kolb deal close

The Buffalo Bills are close to completing negotiations to sign free-agent quarterback Kevin Kolb, according to ESPN.com.

Kolb has six seasons of NFL experience and spent the past two injury-filled years with the Arizona Cardinals. He was released March 15. Kolb completed 59.5 percent of his passes, while throwing 28 touchdowns and 25 interceptions in 34 career games.

Freeney shops for team

Dwight Freeney, a three-time All-Pro and seven-time Pro Bowler at right defensive end, is interested in joining the Lions, the Denver Broncos or the Miami Dolphins, according to NFL.com, According to the league’s website, Freeney wants more than the $8.5-million base salary the Atlanta Falcons gave Osi Umenyiora last week.

Vikings great writes book

Pro football hall of famer and Minnesota Supreme Court Justice Alan Page has written a children’s book about his odd pinky, a finger that’s permanently bent outward at a 90-degree angle.

The book, which will be released this week, is called Alan and His Perfectly Pointy, Impossibly Perpendicular Pinky,

Page has been a state Supreme Court justice for the past 20 years. While in the NFL, he played for both the Minnesota Vikings and the Chicago Bears.