After spending a semester at Ohio State while medically disqualified, Dean announced that he would transfer to Auburn in May 2015.[1] Following his sophomore year at Auburn where he had 43 tackles and eight pass breakups, Dean was named to Bruce Feldman's college football freaks list.[2] On December 29, 2018, Dean announced that he would forgo his final year of eligibility and declare for the 2019 NFL draft.[3]
On July 8, 2019, the Tampa Bay Buccaneers signed Dean to a four-year, $3.55 million contract that includes a signing bonus of $846,852.[7]
Dean made his regular season debut in Week 9 against the Seattle Seahawks during a 40–34 loss in which he recorded six tackles and four pass deflections but gave up 3 touchdowns.
In Week 10 against the Arizona Cardinals, Dean recorded 4 pass deflections and his first career interception off fellow rookie Kyler Murray in the 30–27 win.[8] In Week 12 against the Atlanta Falcons, Dean recorded five pass deflections in a 35–22 win.[9] In Week 16, during a 23–20 loss to the Houston Texans, Dean had one tackle, one pass deflection, and an interception off Deshaun Watson.[10]
Dean finished his rookie season with 21 tackles, 17 pass deflections, two interceptions, and one forced fumble.[11]
2020 season
In Week 6 against the Green Bay Packers, Dean intercepted a pass thrown by Aaron Rodgers and returned it 32 yards for a touchdown during the 38–10 win. This was Dean's first interception of the season and his first career pick six.[12] Dean also became only the third player ever to record a pick-six off Rodgers, joining Tanard Jackson and William Jackson III as the only players to accomplish the rare feat.[13] Overall, Dean finished the 2020 season with 62 total tackles, one interception, and seven passes defended in 14 games.[14]
Dean played in all four games in the Buccaneers' playoff run that resulted in the team winning Super Bowl LV.[15][16]
On March 13, 2023, the Tampa Bay Buccaneers signed Dean to a four-year, $52.00 million contract that includes $21.50 million guaranteed upon signing and a signing bonus of $11.42 million.[17]