FOXBOROUGH, Mass. - The New England Patriots announced that they have signed TE Clay Harbor as an unrestricted free agent from the Jacksonville Jaguars and DT Terrance Knighton as an unrestricted free agent from the Washington Redskins. Terms of the contracts were not announced.

Harbor, 28, is a veteran of six NFL seasons with the Philadelphia Eagles (2010-12) and the Jacksonville Jaguars (2013-15). The 6-foot-3, 250-pounder, originally entered the NFL as a fourth-round draft pick (125th overall) by Philadelphia out of Missouri State in 2010. He has played 83 NFL games with 36 starts and has 111 receptions for 1,151 yards and eight touchdowns. Harbor also started in one postseason game in 2010 with Philadelphia. After being released by Philadelphia on Aug. 31, 2013, Harbor was claimed off waivers by Jacksonville on Sept. 1, 2013. Last season with Jacksonville, he played in 15 games with 14 starts and finished with 14 receptions for 149 yards and one touchdown.