Most likely based on rumors is Trae Young. Word has been all season that if Hawks current iteration falls way short again he might ask out next summer. He also indicated that directly when encouraging the front office to make moves for DL (they added Saddiq Bey, yay!). They are depleted of resources and the value of their players is going down.Maybe Mitchell will ask out of Cleveland if they lose early in the playoffs.
Jokes aside who is an actual #1 that might ask to be traded? Brown is about the only one and I'm not quite sure he's worth going all in for.
Mavs are in a tight spot as well with Luka. They are running out of ways to build around him after messing up with Brunson and Porzingis and if Kyrie experiment fails and he walks in FA, that is a theoretical possibility. Reports saying "front offices are monitoring Mavericks situation" are also indication that there is buzz around the league executives about it.