Tristan Thompson cannot be traded because 3 months have not passed since he was signed. He will be eligible to be traded after Feb 28, 2021.

Victor Oladipo cannot be traded to a team aggregated with other players from his team because 19 days have not passed since he was traded for (Normally 2 months, but shorter due to condensed season). He can only be traded away to a team by himself and other non-player assets from his team (draft picks, cash considerations, etc). This restriction expires after Feb 02, 2021.

Steven Adams cannot be traded this year since he signed an extension after August 6th.