MyTeam Help

I currently have KD at SG in my lineup. He is good there but worth his price to stay there. I do not have any mt coins right now so if I sell him I should have around 100K. My rest of the lineup is Westbrook, Lebron, AD, and moments Drummond. Also what is butler's chance to become amethyst? Also I was thinking about 89 Dominique Wilkins or 88 Jordan. Thoughts on either of these two?