Arnoux was a reserve that did earn three starts as a freshman, racking up 27 tackles, 1.5 of them for a loss. As a sophomore he became a full time starter and finished the year with 69 tackles, seven of them behind the line of scrimmage. Arnoux started to show some more playmaking ability as a junior, tallying 66 tackles, 7.5 for loss, three sacks and a pick on the year. He closed out his career with his best season, racking up a career high 89 tackles, 5.5 for loss, 1.5 sacks, and an interception.
Arnoux is a physical inside linebacker that thrives between the tackles. He is not afraid to mix it up near the line of scrimmage and shows the ability to disengage from blockers to make the tackle. He plays bigger than his size would indicate and shows the speed to make plays up and down the line of scrimmage. Arnoux shows some ability in coverage as well. He has no problems dropping back and does a good job of keeping his man in front of him and preventing him from making the play. Arnoux has some experience at both inside and outside linebacker, and could be a solid special teamer.
Arnoux is short and a bit light in the pants for a linebacker, especially a true inside backer. He has some experience outside but may lack the overall athleticism and agility to project there. Arnoux is a bit hesitant in diagnosing the action and needs to be more decisive and aggressive.
Arnoux has the ability to be a backup in different linebacker roles along with providing a boost to the special teams. That versatility should allow him to till out the bottom of a roster, giving him the chance to prove himself as a starter down the line. He really made a name for himself with a 4.61 40 at the combine, but he does not show that type of speed on the field. That performance should make him a draftable player, but his upside in the NFL maybe limited.