Allen has agreed to a four-year contract extension, a source informed of the deal told NFL Media Insider Ian Rapoport on Friday. Rapoport also reported that the extension has a $45 million base (he can earn a max of $49 million with incentives), including $20 million fully guaranteed, along with a $9.5 million signing bonus. The Chargers later confirmed the deal.
Selected in the third round of the 2013 NFL Draft out of Cal, Allen posted 725 receiving yards and four touchdowns over eight games in a 2015 campaign limited by injury. Prior to suffering lacerated kidney on Nov. 1, Allen had a stunning 67 receptions on the season, which tied him for third most in NFL history over an eight-game span behind Julio Jones and Marvin Harrison.
As a rookie, he compiled 1,046 receiving yards and eight TDs.
With his new extension in place, Allen, 24, figures to play a prominent role in the Chargers' passing offense through the 2020 season.
UPDATE: Allen officially signed his extension with the Chargers on Tuesday.