Avery Bradley 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 Apr 13, 2021.

After the trade deadline, the team cannot trade Avery Bradley since he has a team option next year which is worth $5.9M.

After the trade deadline, the team cannot trade Zach Collins since he has a qualifying offer next year which is worth $13.5M.