Shaughnessy was waived by the Saints on Tuesday, ESPN.com reports.
Shaughnessy last played with the Cardinals during the 2014 season, as he opted to take a year off to get himself completely healthy. The Saints signed him earlier in August as a depth option on defense, but after an unimpressive preseason up to this point, the 29-year-old was let go Tuesday. A six-year NFL veteran, he may find some interest elsewhere prior to the season.
After a year out of football, Shaughnessy will reportedly sign with the Saints, Ian Rapoport of NFL.com reports.
Shaughnessy last played for the Cardinals in the 2014 season. It is currently unclear what type of role the veteran OLB will have with the Saints. At just 29-years-old, Shaughnessy should enough gas left in tank to compete for a roster spot.
Cardinals wideout Larry Fitzgerald is active Week 17 against the 49ers.
Fitzgerald entered the contest listed as probable due to a knee injury. He was never a serious candidate to miss the game.
The club will also have Lorenzo Alexander, Jaron Brown, Calais Campbell, Rashad Johnson, Ted Larsen, Tyrann Mathieu and Matt Shaughnessy for the contest. All seven players were also considered probable.
Deone Bucannon, John Carlson and Dan Williams will all attempt to play through injuries. They were all listed as questionable coming into the game.
With quarterback Drew Stanton (knee) already declared out, the Cardinals listed four players as questionable for Sunday's game against the 49ers including Deone Bucannon (knee), John Carlson (calf), Johnathan Cooper (wrist) and Dan Williams (foot).
Linebacker Larry Foote is also listeed as doubtful for the game with a knee injury. Foote has not missed a game this season, totaling 84 tackles and two sacks.
The Cardinals have also listed the following players as probable: Lorenzo Alexander (knee), Jaron Brown (toe), Calais Campbell (hip), Larry Fitzgerald (knee), Rashad Johnson (ankle), Ted Larsen (shoulder), Tyrann Mathieu (thumb) and Matt Shaughnessy (shoulder).
Cardinals wide receiver Larry Fitzgerald (knee) is active for Thursday night's matchup with the Rams after being listed on the team's final injury report as probable to play.
Fitzgerald returned from a two-game absence in Week 14 and will remain ready to roll after a short week of preparation in Week 15. Other probables who are active Thursday include quarterback Drew Stanton (ankle, knee), tackle Jared Veldheer (ankle) and linebackers Larry Foote (foot), Matt Shaughnessy (shoulder) and Lorenzo Alexander (knee).
Both cornerback Antonio Cromartie (ankle) and defensive tackle Ed Stinson (toe) were listed as questionable to play Thursday and both are active as well.
Cardinals wide receiver Larry Fitzgerald (knee) has been listed as probable for Thursday's Week 15 matchup with the Rams after participating fully in practice Wednesday.
Fitzgerald caught four passes for 34 yards in Week 14 after returning from a two-game absence. He was limited in the team's first two practices of the week before putting in a full practice Wednesday.
Five other players are listed as probable after participating fully in practice Wednesday, including quarterback Drew Stanton (ankle, knee), offensive tackle Jared Veldheer (ankle) and linebackers Larry Foote (foot), Matt Shaughnessy (shoulder) and Lorenzo Alexander (knee).
Cornerback Antonio Cromartie (ankle) is listed as questionable to face the Rams after being a limited participant in practice for the second straight day Wednesday. The team has ruled safety Tyrann Mathieu (thumb) and guard Paul Fanaika (ankle) out.
Cardinals linebacker Matt Shaughnessy left the game against the Chiefs in the fourth quarter with a shoulder injury. He made three tackles, two for loss, before getting hurt.
The Cardinals waived running back Michael Bush and tight end Matthew Mulligan Friday, reports the team’s website.
The Cardinals signed Bush to help provide backfield depth, but Bush never received a carry for the Cardinals.
With two open roster spots, the Cardinals promoted running back Kerwynn Williams from the team's practice squad and activated linebacker Matt Shaughnessy from short-term IR.
The Cardinals play the Chiefs Week 14.
Cardinals starting linebacker Matt Shaughnessy, on short-term IR since hurting his knee Oct. 5, will return for Sunday's game against the Chiefs, reports the team's website. Arizona coach Bruce Arians called Shaughnessy a solid pass rusher who also defends the run well.
Cardinals linebacker Matt Shaughnessy was placed on the injured reserve/designated for return list because of knee cartilage damage, head coach Bruce Arians told the media on Monday, per the team's official website. The injury is expected to keep him out of action for approximately six weeks.
Free agent linebacker Matt Shaughnessy will return to the Cardinals, after spending the 2013 season there. He has agreed to a two-year contract with the Cardinals, according to The Arizona Republic, just one day into free agency.
Shaughnessy put together a solid first season in Arizona, starting 12 of 16 games. He had 36 tackles and three sacks, while forcing one fumble, his first in three seasons.
Free agent defensive end Matt Shaughnessy is visiting the Patriots, reports ESPNBoston.com. He started 12 games last season for the Cardinals, posting 31 tackles and three sacks. He has 18.5 sacks since the Raiders drafted him in the third round in 2009.
The Cardinals are "actively trying to re-sign" outside linebacker Matt Shaughnessy, his agent, Rich Rosa, told the Arizona Republic. “He wants to be there, so we’ll see how it goes.”
Shaughnessy played in every game last season, recording 36 tackles, three sacks, a forced fumble and three fumble recoveries.
The Cardinals have ruled the following players as active for Sunday's season finale against the 49ers in Week 17: John Abraham (groin), Darnell Dockett (shoulder), Rob Housler (groin), Rashad Johnson (ankle), Rashard Mendenhall (finger), Carson Palmer (ankle, right elbow), Matt Shaughnessy (groin), Drew Stanton (knee) and Daryl Washington (ankle).
Cardinals DT Darnell Dockett, TE Rob Housler, OL Nate Potter, LB Matt Shaughnessy, QB Drew Stanton and LB Daryl Washington are probable Week 17.
Housler has a groin injury, but practiced in full Thursday and Friday. Dockett is dealing with a shoulder issue.
The Cardinals have ruled wide receiver Larry Fitzgerald (concussion), tight end Rob Housler (groin), quarterback Carson Palmer (ankle, right elbow), linebacker Matt Shaughnessy (groin), defensive back Justin Bethel (wrist), linebacker Karlos Dansby (foot), running back Andre Ellington (quadriceps), wide receiver Michael Floyd (ankle) and running back Rashard Mendenhall (finger) active for Sunday's contest against Seattle in Week 16.
Cardinals LB Matt Shaughnessy is questionable Week 16 against the Seahawks.
Shaughnessy is dealing with a groin injury. He was able to take part in limited practice Thursday and Friday.
Cardinals linebacker Matt Shaughnessy recorded a sack in Sunday's 24-21 loss to the Eagles. Shaughnessy now has two sacks on the season.
The Cardinals face the Rams in Week 14.
Cardinals LB John Abraham, OL Bobby Massie, LB Matt Shaughnessy and LB Daryl Washington are active Week 10 against the Texans.
Shaughnessy and Abraham were dealing with injuries throughout the week. Washington was listed with an illness. Massie was listed on the injury report, but it was not injury related.
Five of the nine players listed on the Cardinals injury report Friday are probable for the Week 10 game against Houston. They are linebacker John Abraham (shoulder), tackle Bobby Massie (not injury related), running back Rashard Mendenhall (toe), linebacker Matt Shaughnessy (knee) and linebacker Daryl Washington (illness).
Wide receiver Brittan Golden (hamstring) is out while tight end Rob Housler (groin), defensive end Frostee Rucker (calf) and tackle Bradley Sowell (illness) are questionable.