Philadelphia, PA (SportsNetwork.com) - The Philadelphia Eagles announced the signing of cornerback Byron Maxwell after the NFL's free agent period got underway Tuesday.

The Eagles and Maxwell have agreed to terms on a six-year contract, the team said.

The Philadelphia Inquirer earlier reported that the deal is worth $63 million and contains $25 million in guaranteed money.

The move came a week after the Eagles released cornerback Cary Williams -- who has signed with Maxwell's old team, the Seattle Seahawks.

Maxwell was a key piece in a Seattle secondary that surrendered the fewest passing yards in the league in each of the past two seasons and was considered a top priority for an Eagles team making sweeping changes.

The 27-year-old was regarded as one of the top available cornerbacks in the free-agent market.

Philadelphia helped free cap space by trading 2013 NFL rushing champion LeSean McCoy to Buffalo for linebacker Kiko Alonso and releasing longtime pass rusher Trent Cole last week.

Maxwell spent each of his first four NFL seasons with Seattle and emerged as a significant contributor during the team's 2013 championship run. The Clemson product came up with four interceptions and 12 passes defensed while making five starts that season.

He started 12 regular season games this past season opposite All-Pro Richard Sherman, recording 39 tackles, two interceptions and 12 passes defensed while helping the Seahawks reach the Super Bowl for a second straight year.

Maxwell joins a Philadelphia defense that also brought in Alonso and re-signed outside linebacker Brandon Graham to a four-year contract to presumably move into Cole's old position full-time.