Randall Cobb is returning to the Green Bay Packers on a four-year, $40 million deal, a source told ESPN NFL Insider Adam Schefter.

Cobb, 24, posted career highs with 91 catches, 1,287 yards and 12 touchdowns in 2014. He became just the fifth player in Packers history to record a 90-plus catch season.

Cobb and Jordy Nelson became the first receiving duo in NFL history to register 90-plus catches, 1,200-plus receiving yards and 12-plus touchdowns in the same season.

A year after missing 10 games because of a fractured leg, Cobb played in every game and was on the field for nearly 90 percent of the Packers' offensive snaps.

Mr. Reliable Randall Cobb has caught 75.2 percent of his targets since he entered the league in 2011, the highest rate in the NFL among wide receivers. Wide receiver Pct. Randall Cobb 75.2 Percy Harvin 72.0 Julian Edelman 70.0 Wes Welker 69.6 -- ESPN Stats & Information

The 2011 second-round pick was in the final year of his rookie contract.

Although the exact structure of Cobb's contract was not immediately known, in terms of total money it is nearly identical to the contract extension Nelson signed last summer.

In that deal, Nelson got $39 million in new money over four years.

Cobb's deal means that he, Nelson and quarterback Aaron Rodgers will be tied together through the 2018 season. Cobb and Nelson are signed for four more years, while Rodgers is under contract through 2019.

ESPN.com Packers reporter Rob Demovsky contributed to this report.