Derrick Favors 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 Aug 18, 2021.

Tre Mann cannot be traded because 30 days have not yet passed since he was signed as a rookie. He will be eligible to be traded after Sep 06, 2021.

Consecutive draft years 2021 & 2022 would be missing a 1st round pick.