Evan Mobley re-signed with the Cleveland Cavaliers on a max contract worth up to $269 million if he meets certain criteria. He, along with other 2021 draft class members, signed similar extensions. Mobley, a standout defender, has shown growth offensively and is a key player for the Cavaliers.

Notable players from the 2021 draft class who have not signed extensions include Alperen Sengun, Jalen Green, Jonathan Kuminga, Moses Moody, Jalen Suggs, Josh Giddey, Trey Murphy III, and Corey Kispert.