Patriots sign Patrick Chung to extension

FOXBOROUGH, Mass. -- The New England Patriots have signed starting safety Patrick Chung to a three-year contract extension through 2017, a deal that could be worth up to $8.2 million and includes $3.4 million in guarantees, according to a source.

Chung, a 2009 second-round draft choice of the Patriots who returned to the club after playing for the Eagles in 2013, was scheduled to be a free agent after this season.

As part of the extension, Chung received a $2.4 million signing bonus. He will earn base salaries of $1 million in 2015, $1.4 million in 2016 and $1.8 million in 2017.

The deal includes roster bonuses of up to $200,000 in each season (paid per week based on being on the 46-man game-day roster), with an additional $900,000 in incentives in 2016 and 2017.

On the incentives, Chung will earn $200,000 for playing at least 60 percent of the defensive snaps, $500,000 for playing at least 70 percent of the defensive snaps, or $900,000 for playing at least 80 percent of the defensive snaps each season.

Chung has teamed with Devin McCourty as the Patriots' top safety tandem. With McCourty more of a center-field type, Chung's work as more of an in-the-box safety has been an effective complement, and he also plays on multiple special teams units.