This is obviously disappointing news for the Cardinals and Mathieu, as he suffered a torn ACL and LCL just a few years ago.
Mathieu was in the discussion for Defensive Players of the Year and has been an invaluable part of the Cardinals’ defense this season.
Beyond that, Cardinals GM Steve Keim has said that a long-term extension for Mathieu is one their “biggest priorities.”
Mathieu, 23, is a former third-round pick of the Cardinals back in 2013, who has quickly become an impact player for one of the best defensive units in the NFL.
Mathieu has two years remaining on his four-year, $3.052 million rookie contract that included $817,187 guaranteed. He’ll make a base salary of $585,000 this season and another $675,000 in 2016.
In 2015, Mathieu appeared in 14 games and recorded 89 tackles, a sack, five interceptions with one being returned for a touchdown, a forced fumble and 16 pass defenses for the Cardinals. Pro Football Focus has him rated as the No. 1 cornerback out of 111 qualifying players.