The San Francisco 49ers announced they have waived/injured T Luke Marquardt and waived/non-football injury LB Morgan Breslin. To fill those vacancies on the roster, the team has signed TE Kevin Greene to a three-year deal and LB Chase Thomas to a two-year deal.

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Greene (6-4, 255) went undrafted in this year's NFL Draft out of the University of Southern California. He saw action in 37 games for the Trojans, including nine games in 2013. While at USC, Greene spent time at tight end and defensive end/linebacker, where he registered 11 tackles, two sacks, two forced fumbles and one fumble recovery.

A 24-year old native of Oakland, CA, Greene attended Sacred Heart Cathedral Prep in San Francisco, CA. 

Thomas (6-3, 242) originally signed with the New Orleans Saints as an undrafted rookie free agent on April 28, 2013. He was waived by the Saints on August 19, 2013, and later acquired off of waivers by the Oakland Raiders on August 20, 2013, before being released on August 31, 2013. He was added to the Atlanta Falcons practice squad on September 17, 2013, where he spent the remainder of the season. Thomas was signed to a Reserve/Future contract with the Green Bay Packers on January 7, 2014, and was later released on May 12, 2014.

A 24-year old native of Marietta, GA, Greene attended Stanford University, where he played in 53 games and tallied 229 tackles, 50.5 tackles for loss, 27.5 sacks, nine forced fumbles, four fumble recoveries and two interceptions for the Cardinal. During his senior season of 2012, he recorded 71 tackles, 7.5 sacks, two fumble recoveries, one forced fumble and one interception in 14 games played. Thomas attended Walton (Marietta, GA) High School. 

Marquardt was originally signed as an undrafted free agent with San Francisco on May 7, 2013 from Azusa Pacific University. He missed the entire 2013 season after being placed on the Reserve/NFI List on August 27, 2013.

Breslin signed with San Francisco as an undrafted rookie free agent out of the University of Southern California on May 12, 2014.

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