[3] Despite flirting with the 2016 NBA draft, Campbell ultimately decided to return to school after not receiving a combine invite.

[7] On April 5, 2018, after the conclusion of the G League season, Campbell signed with the Alaska Aces of the Philippine Basketball Association.

But before the last game of the Aces, he was replaced with another import Diamon Simpson[9] Campbell signed with the Turkish team Pınar Karşıyaka on August 6, 2018.

[13] Campbell tested positive for a banned substance on March 27, 2020, and on May 15, he was issued a fine and suspended for 18 months by the Turkish Basketball Federation.

[16] On August 25, 2021, Campbell signed with Prometey Kamianske of the Ukrainian Basketball SuperLeague.