Williams, 25, is a veteran of two NFL seasons with the Baltimore Ravens. The 6-foot, 195-pounder originally entered the NFL as a rookie free agent with the Ravens out of Maryland in 2011. Williams was released by Baltimore on Sept. 6, 2013. He played in 23 NFL games over the last two seasons and finished with four receptions for 46 yards and nine special teams tackles. Last season, Williams played in 11 games and finished with five special teams tackles before being placed on injured reserve.
Collie, 27, was signed by the Patriots on Oct. 3. The 6-foot, 204-pounder is a veteran of four NFL seasons with the Indianapolis Colts (2009-12) after originally entering the NFL as a fourth-round draft pick (127th overall) of the Colts out of Brigham Young in 2009. He was signed by the San Francisco 49ers as an unrestricted free agent on Aug. 2, 2013, but was released by the 49ers on Aug. 31.
Collie has played in 46 NFL games with 17 starts and has registered 176 receptions for 1,879 yards and 16 touchdowns. He played in four games with one start for the Patriots and registered three receptions for 34 yards.
Wood, 22, was originally signed by the Houston Texans as a rookie free agent out of Notre Dame on May 10, 2013. He made the 53-man roster out of training camp and played in three games before being released on Oct. 21. Wood had three rushing attempts for nine yards in his three NFL games. He led Notre Dame in rushing in two of his three college seasons.