SAN DIEGO (AP) _ The San Diego Chargers filled one of their most critical offseason needs by signing former Pittsburgh Steelers' left tackle John Jackson on Wednesday.

The six-year contract is reportedly worth $26 million.

Jackson, 33, spent 10 years in Pittsburgh and was a two-time Pro Bowl player. He will receive a $5 million signing bonus as part of the contract, XTRA radio reports.

The Chargers have also extended a three-year contract offer to Chicago Bears quarterback Erik Kramer. General Manager Bobby Beathard confirmed to the station that the Chargers had offered a new deal late Wednesday afternoon to Kramer's agent.

The Chargers also revealed they have offered a three-year contract to Jacksonville Jaguars running back Natrone Means. Means spent three years in San Diego but was released in a dispute involving his agent. He was a starter the last two seasons in Jacksonville.