Chargers add TE David Johnson

The San Diego Chargers continue to focus on bolstering the team’s running game with the announcement of another free agent signing on Wednesday, agreeing to terms on a two-year deal with tight end David Johnson.

At 6-2 and 260 pounds, the Arkansas State product spent his first four seasons in the league with the Pittsburgh Steelers. Johnson’s mainly been used as a fullback and blocking tight end, with 22 career receptions for 216 yards and a touchdown.

San Diego also released fullback Le’Ron McClain before the start of free agency, shedding his $2.5 million salary for the upcoming season.

The Chargers have two talented receiving tight ends in Antonio Gates and Ladarius Green. But Johnson, 26, provides some insurance pending the eventual return of blocking tight end John Phillips, whose rehabbing from a right knee he suffered last December while making a catch across the middle of the field against Oakland.

The Chargers also have tight ends Jake Byrne and Ryan Otten under contract for 2014.