Adams (5-11, 195) played in 22 career games in two seasons with San Francisco, New England and Seattle. He was the 49ers’ seventh-round selection in the 2010 NFL Draft out of South Carolina State.
Clayton (6-1, 230) played in 21 games with one start in two seasons with Philadelphia. He was the Eagles’ fourth-round draft pick out of Oklahoma in 2010.
Smith (6-5, 310) played in four games with three starts for Washington last year. He joined the Redskins as a non-drafted free agent out of East Carolina in 2011.