As for Harrison, the 2008 Defensive Player of the Year, was cut by Cincinnati, where he spent only the 2013 season after being released by Pittsburgh.
It was yet another busy period on the third day of NFL free agency in which Jonathan Martin signed a two-year contract with San Francisco.
Martin passed his physical Thursday to complete a trade that sent the tackle from the Dolphins to the Niners to be reunited with his college coach, Jim Harbaugh. The teams first announced the move Tuesday night for Martin, who left the Dolphins last fall after accusing teammate Richie Incognito of bullying in a scandal that overshadowed the franchise's 8-8 season.
Tampa Bay cut tackle Donald Penn and signed Anthony Collins to replace him; Oakland signed defensive end Justin Tuck; Green Bay re-signed linebacker Mike Neal and tight end Andrew Quarless; and the Jaguars formally signed defensive end Chris Clemons, defensive lineman Ziggy Hood and re-signed defensive end Jason Babin, who led the team with 7½ sacks in 2013.
Revis' business manager, John Geiger, tweeted: "Now it's Official.(at)Revis24 has agreed to terms with the New England Patriots!"
Tampa released the three-time All-Pro before he was due a $1.5 million bonus. Revis was cut after efforts to trade him and his $16 million salary failed.
New England had a need at the position because Aqib Talib left for Denver. The Patriots have not announced the Revis move.
The Eagles were eager to let the world know about the addition of the 30-year-old Sproles, who figures to be a threat as a receiver, runner, returner and in pass protection against blitzers all the things he did so well in New Orleans.
"Darren Sproles is an unbelievable offensive weapon," coach Chip Kelly said. "He can do it all: run, catch, plus he's a proven winner. And on top of that, he can bring all of those dynamic skills to the return game as well. There is no question we were all excited once we found out we were going to be able to trade for him."
Sproles had 71 catches for 604 yards and two touchdowns and ran for 220 yards and two scores in 2013.
Smith has been the face of Carolina's franchise for a decade. But he turns 35 in May and would have cost the Panthers $7 million under this year's salary cap. The Panthers still owe Smith $3 million.
"When I took this position, I knew that difficult decisions would have to be made along the way," general manager Dave Gettleman said. "To move on from a storied veteran player is probably the most difficult of all. A decision not to be taken lightly. However, after much thought I feel very strongly it's the right one."
Hours after being let go, Smith traveled to Baltimore to visit with the Ravens, a person familiar with the situation told The Associated Press. The person spoke on condition of anonymity because the Ravens do not announce free agent visits.