According to Boston.com, the Patriots have signed 7 different players to “futures contracts” (futures contracts are contracts that can be signed before the league year starts in March, as long as the players were not on active rosters):
WR Tiquan Underwood:
He is the famous “cut before the Super Bowl” receiver. He has 11 career receptions, 3 in 2011 and 8 with the Jacksonville Jaguars in 2010. He also has kick returning experience, which does little good in for the Patriots with Edelman and Welker. He was a 7th round pick in 2009 out of Rutgers.
DB Ross Ventrone:
According to Football Reference, he played in 8 games and had 1 tackle.
LB Markell Carter:
He was the 6th round pick in 2011 by the Patriots.