[1] During practice for the East–West Shrine Game, Lee sustained a foot injury and was unable to participate.

Lee performed well, finishing second among all linebackers in the bench press, 12th in the broad jump, and 16th in the vertical.

At the conclusion of the pre-draft process, Lee was projected to be a fifth round pick by NFL draft experts and scouts.

[9] Throughout training camp, Lee competed for the starting middle linebacker role against Ben Heeney, Cory James, and Tyrell Adams.

[11] He made his professional regular season debut and his first career start in the Raiders' season-opener at the Tennessee Titans and recorded two solo tackles during their 26–16 victory.

[12] He missed the next three games and lost his starting role to newly acquired veteran NaVorro Bowman who the Raiders signed on October 16, 2017.

[26] On January 22, 2024, Lee signed with the Arlington Renegades of the United Football League (UFL).

[27] On September 29, 2024, Lee signed with the Calgary Stampeders of the Canadian Football League (CFL).