As a senior, he contributed to an offense that averaged 439 yards (231 rushing) and 33.4 points per game, while not allowing a quarterback sack.
He suffered a wrist injury in the playoffs and had to wait seven months to get surgery, while he was saving for the procedure.
Carrell didn't receive any college offers and moved on to American River College, becoming a defensive starter as a freshman, making 30 tackles, 10 tackles for loss, 4 sacks, 4 passes defensed, 11 quarterback hurries, one interception, 2 fumble recoveries and one blocked field goal.
The next year, he posted 80 tackles (19 for loss), 8 quarterback sacks, 24 quarterback hurries, 2 passes defensed and one forced fumble, while receiving ACCFCA All-American, All-California Region I, All-Norcal Conference and the conference's Defensive Player of the Year honors.
Carrell was selected by the Dallas Cowboys in the seventh round (246th overall) of the 2017 NFL draft,[2] to assure obtaining his rights, after he was considering signing with the Buffalo Bills as an undrafted free agent.