Let's recap. Butler is:
1) Dogging it around the court, barely acting like he gives a shit, in a sort of union "
slowdown" tactic, while also
2) Talking in press conferences about how much he hates playing on the team,
3) After saying in April that if he'd been healthy, the Heat would have sent the Celtics and Knicks home, which was followed by
Riley telling the press "Jimmy Butler should keep his mouth shut if he isn't playing", i.e. show some respect to your teammates who are out there busting their asses...
4 ...all because he
wants a contract extension that Riley isn't going to give him.
If he changes his tune, the Heat may well let him back in and field offers for him while having a BATNA of trying to compete this season. Hell, they're the 6 seed as of right now. But that involves #1 and #2 changing. Because #4 isn't changing, but just because he's sour about that doesn't give him a right to do #1 and #2.