Changing teams midseason can be a jarring event for any NBA player to deal with. Even if you know you are an attractive trade asset or might get waived soon, it is still tough to prepare for everything.
One day, you are here. The next day, you are on a plane to your new city where you must find a place to live, sort through all of the feelings that come with changing teams and all of that.
Not to mention, you have to learn how to play basketball in what might be a completely new system with a bunch of new teammates.