It wouldn’t in the NBA today anyone can be traded it’s not like he’s one of these guys making 30M+ a year.
He’s malcontent for that reason alone you just can’t bring him back there is no next season his relationship with the organization, teammates, and fans is broken.
A lot of teams still see an above average power forward that was an All-Star a year ago still in his prime years who could potentially ball out in a different situation or be a stop gap for a treadmill team.
Portland is a fit. I’m sure plenty of inside NBA people see Julius as talented, as a “dog”, see him as a victim stuck in a bad situation with ungrateful fans, see him as a guy who “turned” the Knicks around, probably plenty of people who can excuse his play this year, or point to his raw box score to portray him as a good player still.